When you move into your new apartment, you don't expect to have a moody neighbour called Jongin. You don't expect to share a balcony with him, to share secrets with him, or to share a little more than regular neighbours do. But things happen, right?

Jaera, to escape her ex-boyfriend and her broken heart, signs up as a counsellor at a summer camp. What she doesn't expect, is a certain guy called Kim Junmyeon, sweeping her off her feet and defying her purpose of going for camp altogether.

Jaera has never really been a fan of spending her summers with that annoying Junmyeon, but now it doesn't seem so bad.