A washed-up musician enlists the help of Elvis Presley to save the planet Earth when the time space continuum becomes inverted by a vindictive inventor in a Las Vegas wax museum.

I like the idea that the mastermind awakens history's worst villains, Not bad.

Thanks, bud!

“A washed-up musician enlists the help of Elvis Presley to save the world when an evil mastermind turns the space-time continuum topsy-turvy in a Las Vegas wax museum.”
OR
“In a run-down Las Vegas wax museum, a washed-up musician enlists the help of Elvis Presley to save Sin City from …”
OR
Baddie’s goal: “… when an evil mastermind awakens history’s worst villains …”

This is your story. Dig it, keep going!

@Richiev, thoughts?