The Wada family—neighbors included—heads to the airport for a vacation in Hawaii. Katsu, youngest of the Taiko drum duo, slips on a banana peel, knocks himself out, and wakes up alone in an empty house to find the flight has left without him. Facing a quiet street with nothing to do and no one around, Katsu makes a decision: he is going to become the most popular presence on this block. His strategy involves making friends with every animal he can find.