Ever since Jiho saw her best friend Woohee's perfectly shaped breasts in a bar bathroom, she couldn't stop thinking about them. To her surprise, an exasperated Woohee lets her see and even touch them after this confession... but the more Jiho fondles them, the more they seem to unlock her Pandora's box of raging hormones. One minute, she's squeezing Woohee's breasts in her dorm, and the next, she's hooking up with her longtime crush Yeonwoo, whose true feelings are a complete mystery. It's clear that Jiho finds them both hot, but which of them holds the key to her heart?