Charlie learns to read, Dee impersonates Ben Franklin, and Frank fights raccoons. We don't quite know what's up with Dennis though.

A crossover television event is always a thrilling prospect—not one, but two of your favorite shows coming together as one? There have been plenty of surprising combinations throughout the years: The Jetsons met The Flinstones,

The "It's Always Sunny in Philadelphia" crew is headed to "Abbott Elementary" in the first of two crossover episodes. The highly anticipated crossover episode will see Charlie (Charlie Day), Mac (Rob McElhenney),