Slobbers may be just a puppy, but he's pretty smart. Which comes in handy when the stinky, slimy snails that live in the gardens start growing way bigger than they should. And Slobbers is growing, too. He's a Saint Bernard, so he's supposed to be big, but soon he's outgrown his collar, his house, and maybe even his new family! It's up to Slobbers, his people, and a mysterious stranger to figure out what's happening and put a stop to it before the town is overtaken by giant snails--and before Slobbers loses the family he's grown to love.