Pluto and Neptune have two spots in which their orbits cross, which sparks a question: what if they get super close to each other one day?

well, i will tell you that this already happened to Triton long ago. Triton is a moon of Neptune, about the size of Pluto, and scientists believe it was once a dwarf planet, but it got captured by Neptune’s gravity. So no, they will not crash like you wish would happen, its much more boring and uneventful. Sorry guys!