In the animation adventure “The Muscle Animals”, two mice, a rat and a hamster invite you on their daring rescue missions in the Hamburg harbor district. Together they are always ready to help other rodents: be it that the nasty rat gang is robbing the mice of their best morsel or mouse children have lost their way in the sewer - the four friends are always there with wit and skill and courageously take care of matters of their kind. Welcome to the harbor district: a lively harbor full of life and cosmopolitanism. But the damp, shadow-filled alleys are not always safe for the rodents of the area. Chased by cats and exterminators, swept away with the garbage, driven out of their houses by construction work: and stomping, unsuspecting people. Every day is full of danger and hardship.