Six months ago the son of the married couple drowned. The couple, together with the teenager that their son saved, begin a journey to cope with the loss.

Seok-young, a girl who loves to swim, comes to the countryside and bumps into mysterious Woo-ju. They get closer after Woo-ju saves her from drowning. However, they part ways when Woo-ju leaves the countryside to pursue his dream. Woo-ju is now a promising swimmer, and Seok-yeong cheers him on from afar. Will they ever be reunited as they swim between feelings of inferiority and puppy love?

The story of victims, perpetrators, and bystanders of school violence surrounding the death of a student.

In the Joseon Dynasty, two friends who grew up together — one the master and one the servant — reunite post-war as enemies on opposing sides.