You (Lee Jinri), Oh Sehun, and Kim Jongin have been best friends and practically inseparable since childhood. They were like the brothers you never had and two of the people you cared about most in the world. Dreams and secrets alike were all laid out in the open amongst the three of you. 

However, things begin to change in high school.

Romance, drama, betrayal, and jealousy...foreign feelings and tensions develop between the three of you.

you are torn between a friendship bond that runs deeper than the sea and following your heart, wherever it may lead you...

You(Lee Jinri): 17 years old, you go by Jin. You are in your 3rd year of High School.

Oh Sehun and Kim Jongin: Both 18 years old. 3rd year in high school