After seeing laughing gas in Science class, Team Lyoko has to see it again - working for Xana. While working for Sissy in a school production of Romeo and Juliet, Ulrich and Yumi are overcome by the gas, and both Jeremie and Odd get a bit too much at the factory. Of course, this results in a data transfer error, leaving Odd bearly able to walk, much less fight off Xana's hordes of monsters. With Aelita flying solo and three of the team in critical condition, will the crew literally die laughing?
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