The next day everyone was heading to school and talking when they overheard two guys picking on a kid. Everyone recognized him as Imori and they watched as Yugi walked over when they were challenging him. Instead of Imori taking his turn, Yugi took it for him instead. Everyone watched as the target was to get a coin in the pot. Watching they seen how it went from the stairs to a bush and land in the pot. The bullies tried to accuse him of cheating but everyone decided to make sure Yugi didn't get attacked and told the bullies that they saw everything and Yugi had won fair and square. After the bullies left then Imori thanked Yugi for helping him. Britt and Nanu both agreed that Yugi was good at a lot of games and smiled as they knew the other secret of Yami helping him in the toughest battles.
During school Britt saw that Yugi got a note and she figured it was from Imori. In a way she thought it was kind that Imori wanted to thank Yugi more than usual. During school things seemed fine and everyone was having a good time when it came to an end and everyone was getting ready to walk home. Yugi was getting his things but he wasn't walking with them and then she looked at him. "Yugi-kun are you ok?" She asked and he nodded as he waved and then left. She figured he was going to talk to Imori. So Britt walked home with the others. She parted ways with them as her and Nanu were stopping at the park. "what do you think of Imori?" She asked and Britt shrugged "a nice kid but Joey says he's dark. It's not like I think that but I know Yugi will make the right decisions." She told her. It wasn't that much longer that they both went home.
Yugi was over at Imori's house with him as they were walking around. Yugi wasn't sure about a secret base but then Imori showed them the way and it was under the house. As Imori lit a light Yugi could see much clearly on where he was. Looking around he saw games and asked Imori if he liked games too. Imori explained that his family had collected all sorts of games over the centuries and they loved games. Yugi noticed that all the games were one player games and wondered if they had friends. Imori said that he wanted to ask Yugi a favor. Imori asked if he could be Yugi's friend and Yugi said yes. Imori said there was a family heirloom that he had never seen but that with Yugi he could probably see it. Imori led the way as they were in front of a door. It took only a few seconds before Yugi realized it that the millennium puzzle was glowing and then realized that the door was a puzzle door. After they figured out and formed the image of a dragon then the door opened. Seeing the game inside Yugi said they should take it to his grandpa to find out what it was.
When they went to talk to Yugi's grandpa both were surprised to see Britt there. "Hey Yugi." she said and Yugi smiled "Britt-Chan, what brings you here?" He asked and Britt shrugged "I was bored and my parents are out on their usual adventure. My boyfriend is coming over tonight but he's not there yet so I have some free time." She told him. Both of the boys showed grandpa Motou the box and he went into explaining about it's origin and what it was about. Imori wanted to play it but Grandpa Motou told them no. That the seal needed to stay on the jar and never be opened. As he was explaining everything both the millennium puzzle and the millennium bracelet started to glow. "Be careful Britt. I sense darkness near that game." He told her and she knew Yami was right and was glad for his warning. But she worried what came with the penalty. Grandpa Motou explained that both the Millennium puzzle and bracelet have mystical power as well and Britt felt a strange feeling come over her as she added something "it's also said the two items are connected." She said and then put a hand to her head knowing her past life was always trying to do something to make her remember things and it was hard on her when that happened.
After they were done talking Imori went home and Yugi walked Britt home. Half way there Yami took over and put his arm around Britt holding her close as she smiled relaxing under his protective arm. "you don't have to protect me all the time." She told him and he looked at her "If I don't then who will?" He asked and she decided to stand up for what she thought. "I will. I'm not some damsel in distress that needs saving by her boyfriend every time I'm in danger. But every once in awhile wouldn't hurt." She said and Yami shook his head as they were walking. "don't you see I want to protect you. Especially from Kaiba and his people who are after us. Besides I'm having doubts on Nanu." He said and that didn't really go over well with her. "what about Nanu?" She said in a harsh tone. "nothing. I'm just saying that I think she's working for Kaiba." He said and she was quiet the rest of the way home. This was their big first fight and she didn't like it one bit. Little did they know that the dragon block seal had been opened and now Imori was being controlled by it. When Yami got her home and he seen that she was kinda mad at him. He kissed her forehead "sorry, I didn't mean to make you mad." he said and she didn't want this to be the last thing between them tonight so Britt kissed him good night with a smile. "good night Yami-kun."She said and then went inside to go to bed.
The next day at school Imori seemed different and not a good kind of different. Behind them Miho was talking about something bad that had happened. An island had been sunk and that her family thought it was a bad omen to go to the beach. She couldn't blame her parents for wanting to be safe but she knew Joey had said some bad things. Looking she saw Imori walk to Yugi and ask to talk to Yugi outside. She didn't know what but after some time she saw Joey follow them. Waiting she got up when she saw Yugi and Joey come in. Hearing from Joey that Imori wanted to copy Yugi's homework or even use it as his own made her think twice on Imori. "Yugi, you need to watch what you do." she said and Yugi felt bad but unknown to them Imori had been watching.
The next class was swimming and everyone was having fun. Britt went to the locker room early than everyone else and she was getting ready to head home when Imori was behind her. Looking back she saw him "Imori-kun. What are you doing?" He said and Imori acted normal for now "Britt, I'd like to challenge you to a game. Follow me to my secret base and we'll play." He said and Britt knew she had to be careful but she nodded. Unknowing he had the Millennium Puzzle she followed. Following Imori her mouth dropped seeing the dragon block game. "oh no. What have I agreed to?" She thought and then she noticed that Imori closed the door behind her so she couldn't leave. Sitting down he told Britt to sit and she did just that. She learned each of the dragon types and needed to figure out a strategy. Imori chose her base and she chose his but she had to be strong. It was times like these she wished Yugi was there to have Yami do this for her. Hearing her thoughts she shook it off and knew she could be just as strong as Yami. Imori placed something around his neck and she realized it was the puzzle. "Yami." She thought and then knew she really had to win. As the game began she looked and started to work to get a earth and water dragon. Thinking those two were the best but then when they each had two dragons and battle was doing she saw Imori had two that were fire dragons. Worried she watched as they started battle. Things seemed to go well at first but then her two dragons lost. "No." She thought and then heard Imori say that the loser lost their soul. Feeling something she gasped as she felt her soul be taken and fell backwards on the ground.
It wasn't long after that Yugi showed up to get the Puzzle back. Walking in he saw Britt laying on the ground "Britt-Chan!" He said and seen she wasn't moving. Yugi was next to go up against Imori next and just like Britt had learned the rules and about the dragons. He summoned two fire dragons and Imori had two water dragons. Going up against each other Yugi saw that his two dragons lost. The water dragon took Yugi's soul and he gasped as he fell forward. Imori thought it was the end but then he saw Yugi had touched the puzzle. Yami had taken over and pulled the puzzle from Imori as he sat up. Imori was surprised to see him move. Yami looked over seeing Britt with her eyes closed. "Britt, you knew the consequences. You took it in trying to win." He thought and then looked at Imori "I challenge you and risk my other soul. But if I win then my girlfriends soul and my other soul get released." He told Imori. "girlfriend?" Imori said as he looked over at Britt seeing that Yami seemed angered. At this point Japan hadn't been attacked thanks to Yami taking over but Britt's base was already destroyed and the one Yugi had was safe for now. When Yami took over and went against Imori they both chose Bases. Imori chose the same location again. Concentrating Yami was working to get a metal and earth dragons and Imori was gathering a water and wood dragons. As the two were summoned things were starting off easy and as the battle progressed not everything seemed to go well. Fighting hard with a strategy he fought until he won against Imori.
Both souls came out and Yami was glad to have his other soul back. Imori's dark soul was taken from him and he looked up to see Yami across from him. He asked him to help out in putting it back. Yami agreed then walked over to Britt who sat up and then saw Yami. "he saved me." She thought and smiled. Yami smiled back at her happy that she was safe and while Imori was putting the pieces away Yami kissed her. She kissed him back in happy that he had come when he did. After that the three of them sealed the game away and made sure no one found it again. After that Yami took Britt home who felt a little lightheaded after her battle against Imori.