Wooju's life revolves mainly around two parental figures, his biological father and his best friend Inha, who takes an even greater interest in his personal life than a typical parent would. As Wooju desperately wants to give Inha a special birthday present, but lacks the funds to do so as a high school student, he devises an unconventional plan to make some money. However, he is aware that if Inha, who tends to be overly protective, finds out, he will attempt to intervene. Will Wooju be able to execute his plan without arousing Inha's suspicion? Follow the heartwarming story of these lifelong friends as their relationship evolves into something much deeper.