You, Basil, who has a crush on you, Omori, Kel, Aubrey, Hero and Mari appeared in front of a mansion. When you look at the sign, it says "The Mansion of Challenges". All of you enter and you all see a boy standing in the entrance hall that you all met during your adventures, and you remember his name was Angel. Soon, a mysterious voice coming from a speaker welcomes you and explains that you're all here for a weak to participate to two trials by day to win a prize.