When the person he has a crush on suddenly moves into his house, Jin Woo tells his new roommate to move out by 10PM.

After learning what Jin Woo's ideal type is, Ki Sub decides to reach his goal by the deadline.

Jin Woo accepts the contract proposed by Ki Sub and begins living with him for a week, and is surprised by Ki Sub's success in meeting the criteria of his ideal type, which he thought was impossible. On the other hand, Balg Eum is shaken by the appearance of In Ho, whom he had feelings for in high school, and after thinking about it, he coldly pushes him away.

Jin Woo unexpectedly kisses Ki Sub. Frustrated that his first kiss didn't go well, he goes to the library to study and read romance books, when he meets Hye Jin, a woman who looks like her ideal type. Balg Eum succumbs to In Ho's enthusiasm and promises to go on only three dates with him, but...

During their date, Jin Woo, who couldn't stop thinking about Ki Sub, evades Ki Sub's question about his relationship with Hye Jin. Worried about Jin Woo, Ki Sub is confronted by Hye Jin, who tells him to disappear for Jin Woo's sake. Meanwhile, Balg Eum and In Ho spend time alone at home.

After leaving Jin Woo's house, Ki Sub feels unwell and goes to the elementary school where his sister works. When Ki Sub finally realizes his feelings and goes to Jin Woo's house, Jin Woo isn't there. Balg Eum, upset that the second date didn't go as planned, became emotional, and the feelings he had kept hidden burst out...

The two finally reunite. Clearing up their misunderstandings, they spend a pleasant night together at Jin Woo's family home. Learning about Jin Woo's childhood, Ki Sub decides to plan a surprise for him. The next day, deeply moved by the heartfelt surprise, Jin Woo finally makes up his mind...