 Seeking his revenge, Bonez leaves Landmark City and makes a home in the Underworld, the remains of the old Landmark City after a massive earthquake that is located under the new Landmark City that was built over it.After kidnapping people and stealing vehicles from all over the city making the people his zombies, Bonez left his green skull symbol where he hit.On Halloween night, the Alpha Teens were sent by Mr. Lee to investigate the disappearance of the Mecha Speeder, a vehicle made by his company.