Will their friendship ever be the same?
Horace, Morris, and Dolores have been best friends forever. They do
everything together -- from sailing the seven sewers to climbing Mount
Ever-Rust. But one day Horace and Morris join the Mega-Mice (no girls
allowed), and Dolores joins the Cheese Puffs (no boys allowed). Is this
the end? Or will Horace and Morris but mostly Dolores find a way to save
the day -- and their friendship?