As soon as Chibiusa arrives at Azabu-Juban, Tokyo, in the 20th century, she wonders where she should look to find the magic cards.I can't walk around for hours, she thought. Oh, I know. Rei can help me. So Chibiusa goes to the Hikawa Shrine. Rei is outside and, as soon as she sees Chibiusa, she's very surprised to see her.

"Chibiusa?! What are you doing here? Don't tell me a new enemy has arrived in Crystal Tokyo! With Chaos defeated, new evil forces shouldn't appear. Unless he is back?!"

"No, no, Crystal Tokyo is safe. There are no enemies. I came because Sakura asked me for help."

Rei invites Chibiusa inside the shrine so they can talk more. Chibiusa tells her about her dream, about Sakura, the elusive Clow cards and she shows the magic key to Rei.

"Hmm." Said Rei, while focusing. "I feel darkness coming from this key. Yet, I don't feel any danger."

"Of course." Chibiusa replies. "It isn't dangerous. I was wondering if you could help me locate the Clow Cards."

"I can try using the sacred flames and my sixth sense. Which card do you want me to locate first?"

Chibiusa thinks and then she says "Watery." Rei asks her to wait for her and she goes to another room to meditate near the sacred flames. She comes back quickly and in panic.

"Rei? What's going on?"

"I found her! Watery, she's at the pool and people are in danger! I also saw Ami in the flames."

"Ami? No. We have to do something!"

Rei doesn't waste time. She contacts Usagi, Makoto and Minako. The girls are happy to hear that Chibiusa is back, but they are also worried about Ami. Rei asks them to meet at the pool, then she transforms into Eternal Sailor Mars. Chibiusa transforms, too.

"Pink Moon Crystal Power, Make Up!"

Then they run to the pool. At the entrance, they join Eternal Sailor Moon, Eternal Sailor Venus and Eternal Sailor Jupiter.

"Mars, Chibi Moon!" Jupiter says.

"Let's go." Adds Venus.

The Sailors Guardians enter the pool room and are shocked with surprise and fear.

The water seems to have come to life and has transformed into giant columns. People are trapped in the blue liquid and among them is Ami. In the columns' center, surrounded by water, is a female creature.

"Whoa!" Can't help but say Chibi Moon. "She looks like a mermaid."

Indeed, the creature has the appearance of an adolescent blue mermaid with elf-like webbed ears and two wing-like fins on her back. Her hair is parted in the middle and three stray strands point upward. A large scaly ring adorns her forehead.

Upon seeing the Sailor Guardians, the mermaid shoots water in their direction. Sailor Moon and her friends barely manage to avoid them.

"Enough fooling around!" Jupiter says loudly. "Sparkling Wide—!"

"NO!" Yells Mars. "Your attack might hurt the people trapped in the water."

After all, water does conduct electricity.

"I'll take care of it." Says Venus. "Venus Love And Beauty Shock!"

Her attack destroys the water streams.

"Let's get it over with! Silver Moon..."

"Sailor Moon, WAIT!" Chibi Moon shouts at her in vain.

"…Crystal Power Therapy Kiss!"

Sailor Moon's attack destroys the water columns and frees everyone, but has no effect on the mermaid.

"H-Ho-How?" Moon asks, not expecting that.

"It's Watery, a Clow Card!" Explains Chibi Moon. "I'm the only one who can capture it."

She shows Sakura's magic key to the Sailors Guardians. Jupiter and Venus think it's so cute. Moon thinks the pink matches well with Chibi Moon. Mars, for her part, has already seen it.

"But I don't know the incantation to turn it into a magic wand." Said the little Sailor Guardian sadly.

"So, what can we do?" Venus asks.

Watery, in anger, prepares a powerful water attack, by creating long dragons. Sailor Moon screams in panic when she sees them.

"Hey, YOU!" Ami suddenly shouts to Watery.

Watery turns to Ami. The other people who were trapped in the water columns are unconscious.

"It's *I* you should be facing! Mercury Crystal Power, MAKE UP!"

Once Ami has become Eternal Sailor Mercury, she wastes no time in using her powers. Mercury already has a strategy. She uses Mercury Aqua Mist to confuse Watery, the Clow Card shoots her long dragons into the void, then Mercury performs Shine Snow Illusion. It took a long time, but Watery ends up frozen. The fog disappeared afterwards.

"Mercury!" Said Moon as he ran to her. "Are you okay?"

"Yes, but I'm exhausted. What power..."

"Chibi Moon." Said Jupiter. "Capture her now."

"I want to, but without the incantation, I—"

"Don't worry!" Said Venus, all smiles. "Say what's on your mind!"

"WHAT?!" Chibi Moon replies, finding her idea strange.

"It will work, I tell you!" Adds the Sailor Guardian of Love and Beauty.

"No." Mars says. "Saying nonsense is not the way to go. Wait... maybe... 'O key hiding the powers of darkness.'"

"O key hiding the powers of darkness." Repeats the little Sailor Guardian.

Suddenly, the key is surrounded by a light and a magic circle appears at Chibi Moon's feet.

"IT WORKS!" Yell Moon, who has returned to the other Sailors with Mercury. This startles her friends.

"Good," Mars continued, "then said, 'Show your true form before me. I, Sailor Chibi Moon, in the name of the contract made with Sakura, command you.'''

"Show your true form before me. I, Sailor Chibi Moon, in the name of the contract made with Sakura, command you."

The light emanating from the key becomes stronger and stronger and the magic circle is brighter.

"Now shout release!" Ends the Sailor Guardian of Fire and Passion.

"RELEASE!"

The key grows and becomes the long pink magic wand. Chibi Moon holds it firmly in her hands. The magic circle disappears.

"Okay, now for the capture." Says Jupiter. "Do we need an incantation too?"

Chibi Moon starts to say yes when Mercury notices that the ice covering Watery is starting to crack.

"NO!" She says. "She's trying to break free!"

"Let's not panic." Mars says. "We still have time. Chibi Moon, approach Watery and lower the wand towards her, saying 'return to your original form, Clow Card'!"

"O-ok."

Chibi Moon approaches Watery.

"Return to your original form, Clow Card!"

She briskly lowers the wand toward Watery and the red beak brings up the glowing silhouette of a card. The mermaid shrieks and is absorbed into the silhouette which turns into a long card, similar to a tarot card. Chibi Moon shouts with joy.

The card, rather than falling to the ground, or going into her hand, goes to Mercury.

"Huh? Why did she go to me?" She asks. "It was Chibi Moon who captured her."

"Yes." Said the little Sailor Guardian. "But it was you who froze her. The cards should go to the ones who defeated them."

"That makes sense." Mercury says. "But what to do with this card? Can it get free again?"

"It's possible." Mars says. "There would have to be a way to bind her to you."

"OH!" Said Chibi Moon suddenly. "Sakura had said 'I wrote my name on each of them, so they should have stayed with me.' So if you write your name..."

"...it will belong to you." Concluded Mars. "That is, until Chibi Moon captures the others and they hand them over to Sakura."

"I see." Mercury said.

The Sailor Guardians leave the scene before the unconscious people wake up, de-transform in a secluded alley, and go to Usagi's house. Meanwhile, Chibiusa transforms the pink wand back into the magic key.

The first thing Ami does when she arrives is to ask Usagi's mom, Ikuko, for a pen to write her name on the Clow Card. Chibiusa bewitches Usagi's parents again to pretend to be her cousin, much to her anger. Then the girls go to Usagi's room and Chibiusa tells them everything, as she did with Rei.

"Wow!" Says Minako. "So there are six cards left to find."

"Yes." Says Chibiusa. "Windy, Wood, Firey, Earthy, Light and Dark."

Ami is thinking a lot. Usagi asks her what she is thinking about.

"Well, Watery represents water, so Firey must be fire, Windy the wind, Wood the wood or nature, Earthy the earth, Light the light and Dark darkness."

"Probably." Rei adds. "I don't know if Watery attacked you on purpose, but if so, Firey will target me."

"Huh?" Usagi asks. "Why?"

"Well..." Mako said, still finding Usagi's naivety impressive. "Rei, as Sailor Mars, controls fire and Firey is fire."

"I still don't understand."

A large drop forms on the heads of the other girls. They can't believe it. They know Usagi is not very bright, but she can't be that stupid!

"I'll explain." Said Ami, while pointing to Watery in her hand. "I have Watery, who is water, and I am Sailor Mercury. My powers are on...?"

"Watery!" Usagi said happily. "Ohhhhhh, I understand now."

Another large drop forms on the heads of the other girls, replacing the first one. Holy Usagi!

"So Firey for Rei and...?"

"If the cards are only targeting us, and not Haruka, Michiru, Setsuna and Hotaru," Ami explains, "I would say Wood for Mako, because she loves plants. Earthy for Minako, her attacks are based on light, but also on metal and metal comes from earth. Light and Dark, if it's a pair, for you Usagi, because you have a long fight against darkness. As for Windy, well that leaves only Chibiusa. "

The other girls nod their heads. Ami's theory is sound. They now know what to expect. Finally, Ami, Rei, Mako and Minako go home.

Chibiusa stays with Usagi. This one orders her, in a dry tone, to leave her room.

"Okay, you don't have to be mean."

"Sorry, it's just... did you really need to hypnotize my parents?"

"Well yeah. Unless you'd rather I stay at Mamoru's?"

"At Mamo's?! NO WAY AND GET OUT OF MY ROOM!"

Chibiusa, with a mischievous smile, leaves Usagi's room. She would like to visit Mamoru but, as she doesn't know how long she's going to stay, and she doesn't want to hurt his feelings, she prefers to leave him unaware of her arrival in the past.