Five swordsmen hire Ogami, each revealing a portion of his mission as they are defeated in this fifth entry in the Lone Wolf and Cub series. After defeating the swordsmen, Ogami discovers his mission is to save a clan's honor by killing its royal family. The senile lord of the clan has substituted his daughter (raised as a boy) to be the heir he never had. In addition to murdering the lord, his concubine, and the girl, Ogami must stop a document revealing the deception from reaching the hands of Lord Retsudo Yagyu. Daigoro is again separated from Ogami in a delicate sequence revealing much about the relationship between father and son, and finding young Daigoro learning to maintain honor in the face of injustice. After seeking out the lord and carrying out his mission in a final battle within the castle, father and son become closer than ever as they follow the road to their final battle. Graced with the finest photography of the series, along with excellent action set pieces, Baby Cart in the Land of Demons is noted as possibly the best (as well as the grimmest) of the series.