Mazwell Mutt and the Downtown Dogs are ready for another adventure when they meet Ant; an unusually small squirrel in search of a story. Luckily, the city has a new mystery – animals are disappearing from the zoo, and soon the gang are dealing with grumpy lions, wise-cracking monkeys and the suspicious Snyder Lard, Security Guard. Will Maxwell solve the mystery, save the zoo and find Ant his story?