Sensui kidnaps Kuwabara for his aura sword, which can cut holes between dimensions, and Yusuke, the reborn teen, chases after them on a bicycle and is challenged to a dangerous video game contest by a little kid.
As the ultimate showdown shapes up between Team Urameshi and Team Toguro, Kurama prepares for battle with his new ability to transform into a fox demon at will; meanwhile, Sakyo sets out to forge a path between the demon and human worlds.
Yusuke Urameshi, an Underworld Detective, struggles with his team to stay alive in the midst of the Dark Tournament in which the rules include playing dirty.
Sensui kidnaps Kuwabara for his aura sword, which can cut holes between dimensions, and Yusuke, the reborn teen, chases after them on a bicycle and is challenged to a dangerous video game contest by a little kid.
In the Demon Plane Sensui, while fighting with Yusuke, finds his true personality coming to the surface, while Kuwabara and the others try to help him.
After training with Raizen, Yusuke gains control of the old demon's domain, which angers the other kings of the underworld, and Yusuke suggests a tournament be held to determine who should rule the demon plane.
Yusuke, a teen who was returned to life by the Underworld--complete with supernatural powers--is working undercover at the dojo of an elderly martial arts master who promises to reveal his secret demon-smiting technique to a worthy student.