Decades ago, a hero from the stars left this world in peace. Now, the son of Ultraman must rise to protect the Earth from a new alien threat.

Six months after the events of Monsters, Inc., the city of Monstropolis is now fueled with the sound of laughter. Tylor Tuskmon, a mechanic on the Facilities Team, dreams of working alongside his idols Mike Wazowski and James P. 'Sulley' Sullivan.

While martial arts champion Baki Hanma trains hard to surpass his legendary father, five violent death row inmates descend upon Tokyo to take him on.