The Junior Monster Scouts have a new grump in town to contend with: Baroness Von Grumpier! A cousin of Baron Von Grump, she's even grumpier, and even more diabolical! And her sidekick is a toad...a very warty, always frowning, not-ever-happy toad. Baroness Von Grumpier has come to visit while her cousin goes on vacation. She wants to tidy up his windmill, but when she takes out all of his garbage and dumps in into one big, stinking trash heap, it comes alive! Can the little monsters save the townspeople from the ruthless rubbish?