As kids, Lee Haru and Yun Dong-Ha made a pact to excel as a baseball player and a ballerina, respectively. They promised to meet up and potentially explore a relationship when Haru returned from Russia.
As the years passed, Dong-Ha became a defiant person who eagerly awaited Haru's return to their school. Sadly, when she arrived, Dong-Ha was disheartened to find that she didn't fit his ideal image of a graceful and slender ballerina.