No, that film was Tenet. Basically they have to stop a bomb going forward in time from going backwards in time, and to do this they have to go backwards forwards through time. But there's people going forwards backwards through time who want to not stop the bomb from not being stopped, because if it goes backwards backwards through time then it goes forwards and kabloowee, kablammo. Then the Americans built a nuclear bomb to stop things going forward and Oppositeheimer had a reverse-breakdancing non-competition with his backwards self, who is the opposite of Oppositeheimer. Best dance loses.
feckin' still pitching that idea to studio execs again. I think because of the writer's strike I might have a chance this time.