头绳，鸡蛋，作业本

这是林钰琪作为五四班班长的普通一天，直到放学前她被班级的捣蛋鬼王一龙抢走了头绳，并意外发现了他的秘密。家长会的演讲之后，被抢走的头绳，母亲用来敷伤口的鸡蛋，每日重复的作业本，一切串联起来。学校一成不变，林钰琪又开始她的一天。

As a model student in her elementary school, 11-year-old Lin Yuqi is assigned to give a speech about her family at the Parent's Meeting tonight. But after Lin finds out that she shares the same secret with a mischievous classmate, she starts to have second thoughts.