Tora-chan and Miike and playing while their big sister prepares for her wedding. Just then a letter arrives; it's from Grandfather, who writes that he won't allow the wedding as long as he lives! Bride and groom rush to the church to get married before the old cat can stop them, but his boat has just arrived! Can Tora-chan and Miike keep him distracted long enough for their sister's happy day to go uninterrupted?