2019
S04E12
Go Yoo and Joon-hee are two friends in high school with different tastes. So-yeon is the new girl that everyone is talking about. When Joon-hee becomes sick, Go Yoo gives him a kidney transplant and Joon-hee experiences cellular memory syndrome. Suddenly Joon-hee becomes like Go Yoo, and vice versa. The two friends become rivals for So-yeon’s love in the midst of their friendship. 15 years later, So-yeon and ’Dr. Go’ coincidentally meet again.
Go Yoo and So-yeon hang out more often and start to show their feelings for each other. Therefore, Joon-hee feels disappointed and left out. On Sunday night, Go Yoo and his friends are having a secret wine party at school, and he invites So-yeon to join them.