Kpop Mutant Ninja Turtles Movie

In every generation, there will always be a group of ninjas. They use their songs to defeat enemies, especially demons aka the Foot Clan. The first generation of ninjas created the Honmoon to protect the world. And now, the new generation of ninjas have to complete the mission to seal the Honmoon. But one of the ninjas holds a secret that the ninjas never knew, and it could destroy the Honmoon.

Also, the humans in Splinter's generation have been wiped out because of a mutation accident. So the world only has mutants.