Ashly explains that she and others traveled to Poipole's home world through an Ultra Wormhole and learned that UB: Black - Necrozma - has to regain it's power by absorbing Ultra Aura, else that world was doomed and they decided to use their Z-Powers to restore Necrozma, so they could save both Solgaleo and the Poipole on that world, but Ashly's tear hits the ground and a bright glow spreads throughout the world shocking both human and Pokémon alike as they don't know what is going on. The Matori Matrix from Team Rocket were also trying to go in and capture the Ultra Beasts, but Faba and Kukui intervened prompting Team Rocket's Gozu to Mega Evolve his Aggron and after their Pokémon got hit by Heavy Slam, Kukui and Faba recall them as Kukui asks about Faba's next Pokémon, but much to his surprise, Faba doesn't have any others as Gozu looks up and says that *it* is started as the sun slowly gets covered by the moon.

The heroes watch as Necrozma absorbs the Z-Power and the bright glow from Ashly's tear, but instead of defusing with Solgaleo, it only became stronger and the bright glow is no longer there cause it absorbed it at well, too. The heroes ask Ashly what to do, but Ashly has no idea until Solgaleo then fires lasers at the cliff sides and blows away the Ultra Guardians. Outside, the moon continues to cover the sun and lots of people gather to watch the Manalo Festival begin as the Island Kahunas gaze at the sun bond hands and watch the eclipse through their hands for they desire the radiance to dispel the darkness that is about to befall the land. Due to Matori's complaints, Gozu tells the other members to return to the aircraft as he plans to finish off Faba and Kukui before he has Mega Aggron use Heavy Slam again, but Kukui orders Faba to keep the next thing a secret from the kids, but Ashly as he sends Incineroar out who uses Darkest Lariat to deflect the Heavy Slam.

Gozu notes they had one more Pokémon left and has Mega Aggron fire Flash Cannon which in retaliation, Kukui presses his Z-Ring passing the Z-Power to Incineroar who uses Malicious Moonsault. With one devastating blow, Gozu's Mega Aggron is defeated and reverts to it's original form making Faba to be surprised and notices Kukui is actually the Masked Royal as he shows his Royal Mask T-shirt and they both make the "enjoy" pose with Incineroar while Gozu recalls Aggron and retreats inside the aircraft while swearing he will get them one day. The aircraft then tries to charge through the Ultra Wormhole, but Tapu Koko charges through damaging the aircraft. Angry for the aircraft's damage, Matori orders the grunts to retreat as the aircraft turns around and beyond the Ultra Wormole, the guardians get back up from the attack. Ashly has an idea, but much to others' disappointment, he says has no idea. He does state even if he does not know the plan, they'll never give up. The group agrees with him: Solgaleo charges straight for them and gets knocked off course by Lunala and this time, Tycrom is with her sister.

Gladion notes they have Lunala and Tycrom by their side and the Ultra Guardians send their Pokémon to support, too while at this time, the moon covered the sun in the eclipse and Tapu Koko sends out some particles into the Ultra Hole. Kukui, Faba and Lusamine all wonder what it is doing; Burnet notices that it looks exactly like the pose the Kahunas do when they show their gratitude during the Manalo Festival and feels it is for the Radiant One. Just then, Wicke reports that she managed to get a visual link of the heroes and the scientists contact Lillie successfully as she and Ashly report they are in Poipole's world and have found out that UB: Black is the Radiant One, but has lost it's light. Lusamine sees that story matches what was on the mural while Kiawe adds that the Radiant One is called Necrozma before Gladion explains they wanted to overpower Necrozma with Z-Power, but failed to defuse the two from each other before Lana explains about Ashly's tear making the place to brightly glow.

Burnet concludes that they then need a lot more people and Pokémon to share their power: when Necrozma lost it's light, it was Solgaleo, Lunala, Tycrom, the people and Pokémon that shared their light with it. To transport this power, Burnet snaps her fingers, thinking that Tapu Koko is probably sending Z-Power through the Ultra Wormhole to Necrozma. The three scientists see they have to repeat the same pose, forming a triangle with their hands. The heroes understand and they and the Pokémon repeat that pose as well declaring that everyone will send power. Lusamine contacts the Island Kahuna, to share these news with the people. Hala thanks her on the phone on behalf of all the Island Kahunas. He tells everyone that the Radiant One was the being that brought light to Alola region. However, it is on the other side and has lost it's light. Olivia tells her people that the same Radiant One used all it's light and has turned pitch black and requires everyone's power to restore it.

Tapu Lele also starts sending her energy towards the hole. Nanu and Tapu Bulu also send their power through the Ultra Wormhole with Nanu stating others that they should send their essence, too along with the prayers of gratitude that have been passed down during the Manalo Festival. Hala then broadcasts that the power they send will save Solgaleo, Lunala, Tycrom and the Radiant One. On Poni Island, Tapu Fini is also sending it's power. All four Island Guardians chant and every Pokémon looks up at the sky as Hala, Olivia and Nanu all pray to give the Radiant One all of Alola's power with it and as Necrozma is about to attack, but stops as the energy started flowing into it as the heroes continue sending their essences and Poipole has it's colony share it's power. Team Rocket notices that everyone is doing a strange pose and wonder if they have to do it, too and Jessie refuses since it looks tiring to the arms, but at that moment, Bewear jumps onto the balloon and pops it making them to all crush.

After the balloon crashes into the ground, the trio notice Bewear doing the pose making Meowth believes the twerps would come back sooner and they'll be able to steal their Pokémon sooner, too which motivates them to share their power as everyone sends their energy which goes beyond the Ultra Wormhole to Necrozma. Necrozma receives this power and diffuses with Solgaleo making the group exclaim that succeeded and just need to let Necrozma regain it's light. Solgaleo, however, collapses and Lunala flies over to check on it. Necrozma, flies over to them, and fires lasers at them, causing mass destruction. The Island Kahuna use their Z-Rings to send their Z-Power to their Pokémon, who emit that power to Necrozma. The latter is not satisfied yet and goes after Solgaleo and Lunala. Gladion jumps on Silvally who uses Air Slash to distract it, but Ashly was quicker than and knows this is not the time to release this secret, but has no chose as she chants an Aloha spell shocking everyone as she glows and reveals she is the Moon Priestess with Lillie doing the same for the Eclipse Priestess making Gladion to change into the Sun Priest.

"Ashly, you're the…" Kiawe was shocked as Ashly looks away with tears coming down her face as she looks to Necrozma making her to start singing to Necrozma making Lillie and Gladion to join in since Ashly was leading them and they left like they know the song somehow really.

"All alone on an anxious night
I am humming a song
The darkness that seems to tremble
I can feel the power within it

Every word and every note are
A piece of a miracle
If you hum
Spread your arms wide sharara
That is the melody that rings to the future

From my heart I will sing
I want to send my voice to a faraway place
As of that day hope turns
The phrase is flapping its wings

Carrying this wish I will sing tomorrow too
As long as my precious person is here
It will be more dazzling than yesterday
I want to meet that smile again

While I was busy I forgot
Irreplaceable things
I had remembered everyone's
Warm kindness

Being too clumsy and not honest
Each time you take a circuitous route
I thought you swore
To the first star
The story that will never change

From my heart let's sing together
Such a wide corner of the world
Even the tears were overflowing
Someday it will shine

Birds tweet and the breeze of spring
Carrying the sounds of the surf even for the sun of summer
While the eyes reflect
Back the love that will forever be told

From my heart I will sing
I want to send my voice to a faraway place
As of that day hope turns
The phrase is flapping its wings

Carrying this wish I will sing tomorrow too
As long as my precious person is here
It will be more dazzling than yesterday
I want to meet that smile again." Ashly collapse into Kiawe's arms as she was tired, but Necrozma was still not fully back to it's power making her to know this might kill her and was about to take a pill that's might for a last resort, but Kiawe offers his powers to her instead making her to look shocked as Kiawe might dead from it.

"I don't care cause I can't lose you, Ashly." Ashly cries and her tears made Kiawe to have the clothing of both the Fire and Dragon Priest combined together making him to see the tail, wings and head wear of the Dragon Priest's clothing while the flamed cloak of the Fire Priest was attached to the parts making him to look amazing while Ashly looks more like the Moon Priestess with Gladion as the Sun Priest and Lillie as the Eclipse Priestess from the very past while Mallow looks like the Grass Priestess, Lana looks like the Water Priestess and Sophocles looks like the Electricity Priest making Necrozma to look shocked as he never saw so many in one go really making him to wonder what is going on here. Poipole glows a faint purple and heads to Ashly who holds him as the glow was getting brighter with Kiawe looking fiery color and dragon-like before Ashly was standing on her own with sparkles outlining her body with a mirror that has a dark circle on the top which is for the moon as it shows Aloha and the solar eclipse is happening right now making only Gladion and Lillie to be more powerful than she is right now.

Lunala then throws Gladion a Z-Crystal while Mallow and Ashly head over to give Solgaleo a Sitrus Berry causing it to recover and Gladion asks Ashly if she can pull off a Z-Move; Ashly says she'll try as she places the Z-Crystal into the slot and asks of Lunala for support making Ashly, Lillie (Who has a Z-Ring from Storm) and Gladion as well as Solgaleo, Lunala and Tycrom stand together. Ashly and Gladion pass the Z-Power onto the two Legendary Pokémon, who execute Searing Sunraze Smash, Menancing Moonraze Maelstrom and Blinding Eclipseraze Blackhole. The three powerful Z-Moves launch at Necrozma as Necrozma splits itself into parts which starts glowing with a golden light and forms wings as the parts connect to each other forming a draconic-like form that illuminates the area. Ashly and Lillie contact Lusamine that they saved Solgaleo and the Radiant One. Happy, Wicke, Lusamine and Burnet looks at the sun just in time for the eclipse to start to recede as Necrozma shoots a beam at the sky of Poipole's world dispelling the clouds and revitalizing the area with life, plants and water. The heroes are amazed and notice Poipole is feeling cheeky, but suddenly, Lusamine messages them fast that the Ultra Wormhole is beginning to close as Ashly goes aboard Garchomp, then notices that Poipole is talking to it's leader about something and it looks towards her before looking back making sure it knows what it is doing which he nods his head.

"I can't keep you here to help them protect the land. If she has a greater burden than you did trying to save our world, then you need to go and help her out."

"Will it be alright if Poipole comes and visits you guys? You can come over as well, too." Naganadel was shocked and Poipole was spinning in happiness as it hugs Ashly's face while doing a aura bond with her which she accepts making her to giggle which has Naganadel to believe Poipole is happy as she'll be able to come and visit when he's older and bigger which Ashly promises she'll take good care of him. Everyone is happy as they go and follow Lunala, Solgaleo and Tycrom making one of the Poipoles to stop crying and then draws a picture with it's tail in the sand as Ashly is happy about being with Poipole, but notices Poipole's friend drew a big picture of her and Storm with Poipole which means it'll miss them, too. The Ultra Guardians say that they'll miss them, too and wave goodbye while the Poipoles bids them farwell as they go through the Ultra Wormhole.

Aether Foundation and the rest are happy to see the children returned even the Team Rocket trio which the latter thinks it's their big chance to steal Solgaleo, Lunala and Tycrom, but they got carried away by Bewear. The energy particles then come out of the Ultra Wormole and form the Radiant One's shape was putting everyone in awe. Back at school, Kukui shows up in class with his coat buttoned again and said sup instead of the cheerful Alola which everyone is in shock, fearing that the dark day has returned. Kukui simply replies he just caught a cold much to the others obvious surprise. Ashly then cheerfully decides to do the morning greeting themselves with Kiawe adding to do it with everything they got. Mallow then has them shout it out loud, ALOLA! Hala looks at the sky and thinks that a lot happened, but the Manalo festival was a success as Olivia cries and thanks the Radiant One.

However, Nanu thinks that it was a troublesome festival. Ashly went into a deep sleep the night before as they all left their priestesses/priests forms making Ashly to be on the ground out cold making Kiawe to hold her close to his chest as her warmth was gone and she was cold as making him to have Charizard to warm her up which it did by breathing fire onto her and her warmth returns as Kiawe was controlling the fire to not harm her making her to sleep and her chest was moving again making Kiawe to know he was lose to losing her making him to step up his training as the adults got over to them making Kukui to pick up Ashly making them to sleep over at his place for the night and he won't hear any complaining coming from them making Kiawe to agree to it fast as he keeps Ashly warm at night since it'll drop. Ashly was much better in the morning and had made breakfast as a apology making them to enjoy it really as she was wearing a apron as she cleans the dishes with Mr. Mime helping her out.