While on their route, Tayo and Rogi save the garbage truck, Rubby, from trouble. Later, they discover an old parking lot by chance and have such fun playing there that they return to the garage late. Tayo and Rogi are dirty from playing in the old and dusty parking lot.
Hana and Cito scold them and tell them they are not allowed to play in the dirty old parking lot again. Incidentally, Rubby learns that Tayo and Rogi can't play in the old parking lot anymore and feels bad about it. He starts to think of what he can do for them.