Godzilla and Rodan were just fighting each other when both of the prehistoric Kaiju realized something important.
"What the hell are we doing again?" Godzilla asked upon firing his atomic breath that was missing the giant Pteranodon flying circles around him.
Rodan scoffed while he used his wings to flap enormous gusts of wind onto the mutated dinosaur that knocked him away. "How should I know?"
Eventually the reptilian bros realized the errors of their ways and decided to take out their powerful attacks on the generic Asian city they found themselves in due to them already doing indirect damage regardless.