With you in my youth

Eun-bi, a sophomore in high school, loves taking pictures with her Polaroid camera. A boy accidentally gets in her picture. Since then, they've been running into each other more and more, even for seemingly trivial things. The boy, Kang Tae-hyun, was once a close friend of hers, but now he's a delinquent. As they get to know each other, a series of events intersect, ushering in a tumultuous life for Eun-bi.