Young-kyu stares with envious eyes when the children give another teacher's birthday party. However, when he realizes that his birthday is coming Sunday, he will be very disappointed and roll his head. Finally, Young-kyu is waiting for her birthday and looking forward to seeing how the children react. Inferior, Ui-chan, and Jeong-bae live together with a piece of chocolate they want to eat with. When Ui-chan says she needs to meet Chan-woo, she cherishes and cherishes the chocolates and the children in the hospital leave the chocolate bag by mistake. After seeing the fact that they lost chocolate lately, they ran to the hospital, but the only thing left was an empty bag. (Source: SBS)