Guobin was punished by his mother for not knowing how to do his homework. His mother told him that he would be a garbage collector in future if he chose not to work harder.

Xinjie was doing a project on understanding different occupations, and requested to interview Terry's, Guobin's and Wenfu's parents. The three then realized that Xinjie's family members were all doctors, and she aspired to be one too.

The students had to perform area cleaning in school because the school cleaner resigned after a quarrel with the discipline mistress.

When the students were told to write about their ambitions, most of them thought that their future was bleak.

The school cleaner who left the school came back as the boss of a cleaning company. Terry could not understand why his mum kept saying that a garbage collector has no prospect.