When her friend suddenly cancels on the trip they meant to take together, Sejin finds herself alone on the sunny beaches of YangYang. Struggling to advance her modeling career and feeling trapped by the increasing pressure to tie the knot with her boyfriend, Sejin is in need of a fresh start. 
Overcoming her initial fears, she finds release in learning to surf on her own. 
While she spends a hope-filled summer vacation riding the waves and meeting new people, Sejin also finds space to reflect on her turbulent past.