Cheer Up

S01E10 Theia’s Field Trip

Following their triumphant show of Theia, the group makes their way to Cheers for a night of celebration. The enthusiasm of the evening leads them to drink excessively, resulting in all of them blacking out. When they regain consciousness, they discover they’ve somehow ended up in Busan. Hae-yi is left with only a hazy memory of sharing a kiss with someone, and she's heartbroken as she embarks on a quest to uncover the identity of her mysterious partner.