Mok succeeds in summoning the demon at his concert in Ohmtown with Angel’s voice, and in the ensuing chaos (during which Omar, Dizzy, and Stretch show up to save Angel), Angel reasons that, since she sang the demon here, she can sing it back to where it came from. She starts to sing, but her voice alone has no effect. However, before the demon can harm her, Omar starts singing in harmony with her, and this sends the demon back through the portal to its dimension.
Mok frantically tries to stop them, but his henchman Toad who blames him for the death of his brother Zip moments earlier at the demon’s hands picks him up and throws him down into the portal. Before he falls in, Mok realizes that, when his computer told him that “no one voice” could stop the demon once summoned, it did not mean that no voice whatsoever could stop it, but that more than one voice could. The portal then closes.
The audience cheers wildly for Angel, Omar, and their bandmates, and Mylar introduces them all as the newest superstar talent fronted by a vocalist duo. The movie closes with the sun rising in Ohmtown.
Sometime after kidnapping Angel and arriving in Nuke York for his concert/demon summoning, Mok gets the song Angel needs to sing to summon the demon from his computer, but the computer also warns him that the demon can be sent back to its dimension by “the magic of one voice, one heart, one song.” When he asks what voice could do that, it replies “No one.”
Angel overhears the first part of this warning while she is escaping with Cinderella the sister of Mok’s goons Toad, Sleazy, and Zip who takes her to Club 666 for some fun. Omar, Dizzy, and Stretch find out about Cinderella and that club from Dizzy’s aunt Edith and go there to look for her, hoping that she would be able to tell them where Angel is. Unfortunately, an acquaintance of the goons has listened in on this, and he contacts Toad and fills him in on everything, and he in turn tells his brothers and Mok.
The antagonists head to the club and capture Cinderella and the band, with Mok capturing Omar by using an impersonator of Angel to fool him into thinking that she digs Mok. Mok then tortures the band inside a giant Edison Ball in front of Angel until she agrees to sing for him, and he then brainwashes them and sends them back to Ohmtown so they won’t interfere. They end up singing bad folksy songs at Mylar’s bar.
Mok’s concert ends disastrously when an overwhelming power surge kills all power in the city. His computer tells him that he must now do the concert in Ohmtown, since the town’s power plant has the right amount of power needed to summon the demon. As the concert is underway (where Angel is being forced to sing courtesy of a vocal device Mok had placed around her neck), Mok’s goons cause a temporary power overload that shorts out all of the lights in the city, and a jolt of electricity hits Omar, Dizzy, and Stretch and snaps them out of their haze. They quickly realize where they are and what Mok is doing in town, but Omar doesn’t want to save Angel from him, fully believing that she and Mok are together. Dizzy tells him to believe his heart, not his eyes, for Angel would never do that to him. He and Stretch then go to the concert without Omar, who vanishes.
By the time they get there, the demon has already been summoned and has started causing terror and mayhem. As it turns its attentions to Angel, Omar suddenly appears and frees her. The demon then launches a projectile at him, but Zip who has come to understand that what Mok is doing is wrong steps in front of Omar to protect him. The resulting blast dazes Omar and kills Zip.
While she is tending to Omar, Angel remembers what Mok’s computer had said about how to send the demon back where it came from, so she starts to sing. Her voice alone has no effect, but before the demon can harm her, Omar gets up and sings in harmony with her, and this sends the demon back. Mok frantically tries to stop them, but Toad blaming him for Zip’s death grabs him and throws him down into the portal. Before he falls in, he realizes that when he was told that “no one” could send the demon back once summoned, it did not mean that no voice whatsoever could send it back, but that more than one voice could. The portal then closes.
As Omar and Angel hug, the audience cheers wildly, and Mylar introduces the band as the newest superstar talent fronted by a vocalist duo. The sun rises in Ohmtown as the credits start to roll.
Thanks Tornado Dragon!