Nathanael was in his room and unpacking his school books. He and Marco went to the school and made arrangements with the principal. Nathanael will do his studying at his own pace on Mewni but has to visit the school with his scissors once a month. He placed his last books on the desk inside the room and flopped on the bed on his back. Folding his arms behind his head, the boy tried to block out the noise coming from down the hall. Aqua was staying in his parents` usual room and she was screaming about something to Moon. Nathanael feels bad for the queen. Everyone has told him about the missing Princess Star. He understands she was someone everyone loved and she was his father`s best friend.
A knocking on his door brought Nathanael back from his thoughts. "Come in!" he called without sitting up. Ember walked in and sat down on the end of the bed. "Nath, I`m bored. Let's go to the Bounce Lounge!" the little girl complained. Nathanael just hummed in acknowledgment. "Come on, bro! Please?" Nathanael cracked open an eye and saw his sister give him the puppy eyes. "Oh, no, Ember. You know I can`t say no to that look!" the older boy cried out dramatically as he covered his eyes with his hands and half fell down the bed. Ember just continued making her puppy eyes. Nathanael peeked out from behind his fingers and let out a small smirk, showing he gave up. His sister broke out into a huge smile as she jumped down the bed and went to grab her brother`s scissors. Nathanael tried to pull himself up onto the bed but ended up falling to the floor completely. Ember laughed at her goofy older sibling as he stood up and dusted off his pants. Taking his scissors from Ember, Nathanael opened a portal. While Ember`s were colorful and elegant, his were dark blue with the blades in different shades of gold. "Come then, let`s get Richard and Raphael." Nathanael said as he stepped into the portal. Ember cheered and followed her brother as the portal closed.

In the training ring, Hekapoo felt a small shift in the air. Her pause caught Marco`s attention as he stopped sparring with River. "Hpoo, what`s wrong?" he asked her. Hekapoo just smirked as she adjusted her scissor knives in her hands. "Nothing is wrong. The kids just left this dimension. I bet you they went to the Lucitor castle." Marco smirked right back at her as he pointed his katana at her. "Ten dollars say they went to the Lucitor castle and then the Amethyst Arcade." Hekapoo smirked at him as she walked over to her shirtless husband. "Twenty say that after getting the twins they are going to the Bounce Lounge." River saw the exchange and walked over to the gambling parents and shook his head at them. The pair didn`t even notice the king as they clapped their hands together and spoke at the same time.
"Deal!"

In the Underworld, Raphael was reading his favorite spell book on the open window. Right below him, Richard was sparring with a couple of guards. "Your right hand is loose, brother." the younger brother remarked without looking up from his book. Richard adjusted his hold on his axe and glared at his sibling. "Thank you for noticing, bro." he sarcastically replied. "Anytime." Raphael said back as he peeked over the edge of his book and smirked at Richard. Richard, in return, poked his tongue out at him and continued his training.
Suddenly, a portal opened up next to Raphael. Out came Ember, who landed safely on the window next to Raphael, and Nathanael, who fell straight to the bush under the window. Both twins looked at the Diaz siblings with different expressions. Richard`s mouth was hanging open but his brother was looking at them with an amused smile. "I was wondering when you two are going to show up. Amethyst Arcade or Bounce Lounge?" Raphael asked while still smiling and jumped down the window. "Bounce Lounge, Bounce Lounge!" Ember chanted with a wide smile. "What she said." Nathanael groaned out as Richard helped him out of the bush. "What is all the ruckus about!" a very annoyed Tom shouted from the door to the training grounds. "Nothing serious, dad. Just a couple of falling Diazes!" Richard called back as he hoisted Nathanael up by grabbing his waist. Nathanael blushed at that as he stood up quickly and pried the arms from his waist. Why was he the only full-blooded human? "Oh, carry on then." Tom said as he closed the door and continued his daily activities. "Well then, what are we waiting for?" Ember asked from the window. "Now we open a portal and spend our night dancing away!" Richard answered with a wide smile as he took her from the window and spun her around. Both of them laughed as their siblings shook their heads at them. Nathanael took his scissors and opened another portal and the group walked through it.

Tom was watching the kids leave the dimension from a higher floor window. "I think we can meet them at the Butterfly Castle." Janna said as she walked up to her husband and hugged him from behind. The demon smiled at the gesture but then a thought crossed his mind. "Twenty says they go to the Bounce Lounge." Janna smirked at him from over his shoulder. "Make it thirty and Amethyst Arcade." she said as she reached up and sealed their deal with a kiss. "I like those odds." Tom replied back as they walked back into the drawing room.

"Woohoo!" Richard cheered as he and Ember danced to the song. Raphael and Nathanael were sitting in a booth and talking about comics. "I think that character is amazing. He just escaped his controlled life and has finally a chance to explore the world and himself." Nathanael said as Raphael rolled his eyes. "Oh please, he constantly asks questions and comes off as annoying." he replied as he took a drink from his soda. "You just say that because you like his grandfather more. You have always liked the manipulator types." the dirty blonde boy countered back. "And so what? You, on the other hand, have always loved the klutzy, innocent one. Maybe that is because you can relate." Nathanael opened his mouth to say something but chose to close it and take a sip from his drink. All these years he has known the Lucitor twins, he has never won an argument against Raphael. "You give up, Blondie?" Nathanael looked up to meet Raphael`s shit eating smirk. "Are you two nerds done?" Richard asked as he and Ember walked over. "No, we will continue arguing for five more hours." Raphael answered his twin. "Five hours! But we have to back for dinner which is in two!" Ember exclaimed as she jumped on to he seat in the booth and grabbed her brother by his shirt collar. "Sis, relax, he was just joking." Nathanael tried to calm her down. The girl made a thinking face before understanding what her sibling meant.
"Can we come to dinner to?" Richard asked as he sat down next to his brother. "I don`t think Moon and River would mind. But..." Nathanael trailed off while scratching the back of his neck. "But what?" the twins asked in unison. Ember quietly giggled at the Lucitor twins. She found these moments amusing. "Aqua is also staying at the castle." the older Diaz kid answered the twins. Raphael`s face drained of all color while Richard started laughing like a maniac. "Hahahahaha! Aqua is at the castle! Hahahahaha! Oh, bro, are you in trouble! I mean she has been after you ever since you broke up with her! Hahahaha!" Richard continued to laugh as he flopped his head on the table and hitting the surface with his fist repeatedly. "Thank you for the reminder, brother." Raphael hissed while glaring at his laughing brother. He hated to be reminded of those few months he spent with Aqua. At first, she was sweet and polite but the more he got to know her, the more her snobby and spoiled side came out. She became more bossy and uptight with him. After he broke up with her last year, Aqua has been trying to get him back because she found him handsome and he was royalty, like her. "Are you still gonna come to dinner?" Raphael was pulled from his musings and looked at the one who had spoken. Ember was watching him with hopeful eyes, wishing he would come. Raphael just cracked a smile and shook his head. "Of course we are coming. We haven`t seen Moon and River for a while." Ember`s whole face lit up with the widest smile she could muster. "Then it`s decided. We will have dinner at the Butterfly castle tonight. But, Raphael, are you sure?" Nathanael looked at the demon. "I will not let a lovesick princess ruin my night with friends. Besides, she is a nuisance, not an actual enemy." Raphael said back to him. "I still think you should give her a haircut, with a spell preferably." Richard muttered under his breath. He never liked the heir to Mewni`s throne. But his brother had heard what he said and got an elbow to the ribs.
"As much as I want to do something to her light green hair, she is still the ruler in training of our greatest ally. I don`t want to ruin our good relations because of some little history." Richard groaned at his twin. Raphael`s diplomatic side was taking over.
The Diaz siblings just gave the twins amused smiles but in their heads, they were on Richard`s side. They may or may not have drawn mustaches on to the water drop cheek marks of a certain heiress at the night of her birthday.

A portal opened in front of the dining hall`s doors in the Butterfly castle. The group of friends stepped out of it and proceeded to the hall. When Richard and Nathanael opened the doors, they heard laughter coming from the table. "Mom? Dad?" the twins asked at the same time as they saw Tom and Janna sitting at the table with Marco, Hekapoo, Moon and River. "Oh, hi boys! About time you showed up!" Janna said with a smile as she walked over to her sons. She pinched their cheeks as the twins blushed. "Mom!" they both shouted as they got away from her and walked to the table. "Oh, come now. Your mother was just being her playful self." Tom said as everyone else laughed or cracked a smile at the Lucitor family. "Trust me, it could be worse." Nathanael said to his friends as he sat down next to his mother and gave her a knowing smile. Hekapoo winked back at him and turned herself to her husband. Marco was busy talking with Tom about something so he didn`t notice when Hekapoo raised her arm and playfully hit him upside to the head. Marco felt a rush of warmth on the back of his head and quickly raised his arm to touch the spot his wife had hit. "Not again!" Marco exclaimed as he felt skin instead of thick hair on that spot. "And that is how bad it could be." Janna said matter-of-factly to Richard and Raphael as they all laughed at Marco`s antics as he tried to cover his head. with his shirt. "By the way, where did you all go?" Moon asked as she turned her attention to the kids. "Oh, we went to get Ricky and Ralph and then to the Bounce Lounge!" Ember said with a smile as she remembered the fun she had dancing.

No one, excluding River, saw Janna and Marco groan as they handed money to the grinning Tom and Hekapoo.