Unstoppable vs Immovable

In a very recent movie, a certain character purple suited character said the line "this is what happens when an unstoppable force meets an immovable object. While in the context of the movie, there was no unstoppable force or immovable object shown, what would happen in these two things really happened. But that the just the thing because all the fundamental forces are unstoppable and there is no such thing as a immovable object according to relativity. But what would a collision between an object that we can't stop and an object that we can't move. In both these cases the object would have to have an infinite mass that way any force applied to?this object wouldn't accelerate it at all. And so when they collided since they cannot be accelerated, the only thing that could happen is that they pass right though each other.

ps

What movie am I talking about