Tom is a cleaner in the park. He is earnest, responsible, dedicated, and even a bit stubborn. For him, cleaning is not just a job—it is a sacred mission. Every morning, he starts his diligent work, tidying up the park to welcome visitors. 　　 However, there are always some careless people who, despite the trash cans placed along the paths, thoughtlessly litter. Helpless, Tom can only pick up the discarded items again and again and put them into the trash cans. But this is never enough to keep up. So, he simply picks up a trash can and chases after the visitors, engaging them in a strenuous "shooting" game. Another tense and busy day passes just like that...