The shogunate announced “ninja prohibition order”. Gohime (Aoi Morikawa) and her party travel to Edo to ask for Nagano han’s relief. Denzo (Dean Fujioka) is a former ninja, with a mysterious past, now travelling with Gohime's party as security. While in the mountain, their group is attacked by a monster. Only Gohime and Denzo survive. Denzo aims to protect Gohime from the monster, but they also develop feelings for each other.