A shy art student joins a surfing club—and falls for the senior who teaches him more than just how to ride the waves.

Lim Ji-sub
as Jae-won

Oh Jun-taek
as Ji-hyun

Lee Mi-ra
as Yoon-won

Park Hae-in
as Eun-ji

Jang Young-joon
as Park Tae Hyeong

Chae Soo-ah
as Lee Bit Na