Trouble in Tidytown

For Clean Catherine and her friends, Tidytown is the perfect place to live. The air is pure, the grass is green, and you could eat your dinner on the streets! However, when Dirty Dexter appears and starts littering everywhere, Tidytown is put in danger! Can Clean Catherine and the townsfolk of Tidytown stop Dirty Dexter, or will Tidytown stay untidy forever?