"Babycart in Peril" is the fourth of the internationally renowned Lone Wolf and Cub productions. Lone Wolf (Ogami Itto) is separated from his Cub, Daigoro, in the course of a mission to find and kill the tattooed mistress of martial arts, Oyuki. Daigoro is found at the mercy of a rival of his father, Ogami Itto. Ogami eliminates the problem with his routine efficiency. Despite continuous harassment from Yagyu assassins, Lone Wolf discovers Oyuki. Although he admires her, he is contracted to destroy her. All this time, the evil Lord Retsudo is coming closer to Lone Wolf, and he's bringing an army with him.