Kael and Baby are neighbors who have been friends since childhood. Kael is a shy and reserved boy, while Baby is an outgoing and passionate girl. When Baby meets Kai, Kael's older brother, she is instantly attracted to him. Kael is also interested in Beryl, Baby's older sister. The two decide to collaborate to help each other set up a relationship with their siblings, but Kael keeps a secret: he is actually in love with Baby.