Ep 1. Episode 1

Five college students - Yun Tae-o, Han Song-yi, O Ga-rin, Choi Ri and Seo Do-hyun - live together in a spacious house. Tae-o, who inherited his grandparents' house, puts his housemates up rent-free. With Song-yi constantly by his side, Tae-o has had feelings for her for a while, even though she remains oblivious to them.

Do-hyun, who just dumped his girlfriend, seeks Song-yi's attention but keeps getting turned down. After finding out that Do-hyun hasn't secured lodgings elsewhere, Tae-o offers him a room in the house on a temporary basis. Ri drops by the house since it's owned by her ex-boyfriend Tae-o, but things get awkward when she finds out that Song-yi is living with him. Ga-rin, who is trying to manage her multiple part-time jobs, shows up with her boyfriend.

The housemates have an impromptu party where they play drinking games. Do-hyun seems like he's about to confess his feelings for Song-yi, but she falls asleep early. Tae-o and Song-yi spend some time alone on the rooftop and almost share a kiss; however, they are interrupted by a drunken Ga-rin.

The next day, Do-hyun and Ga-rin realize they've met before and may have feelings for each other. Meanwhile, Song-yi feels that Tae-o is acting a bit cold towards her and confides in Ri. Tae-o ends up talking to Do-hyun and asks him to stay away from Song-yi, which hurts Ri's feelings.

As the episode ends, everyone is seen going about their day-to-day activities while Tae-o reflects on his feelings for Song-yi and how he can't seem to tell her how he truly feels.

The first episode sets up the premise of the show and introduces the main characters and their relationships. Viewers are left with anticipation for what will happen next, especially with the underlying tension between Tae-o and Song-yi and the potential love triangle forming between Ga-rin, Do-hyun, and Song-yi.