A major crossover event kicks off on Wednesday's episode of Abbott Elementary, as the "Gang" of Its Always Sunny in Philadelphia shows up at the school for a week of volunteering. Entertainment Weekly ...

It might be always sunny in Philadelphia, but that doesn't mean there aren't some clouds about to hit Abbott Elementary school. But Dennis isn't having it. "No, I don't think so," he says.

ABC and Quinta Brunson's Abbott Elementary is returning for Season 5 - and the crossover with It's Always Sunny in ...

The anticipation for Abbott Elementary and It’s Always Sunny crossover episode has been building up among the fans of both shows for months, and Part 1 of it is finally here. Aired as Season 4 Episode ...

The crew is mostly happy to be there, until Dennis (Glenn Howerton) notices the cameras filming them ... and Danny DeVito on 'Abbott Elementary' But Dennis isn't having it. "No, I don't think so," he ...

Paddy's Gang are ready to volunteer at Abbott Elementary. It might be always ... The crew is mostly happy to be there, until Dennis (Glenn Howerton) notices the cameras filming them.

As of Jan. 9, the episode is available to stream on Hulu. The second crossover is expected to be an episode of "It's Always Sunny in Philadelphia," which has aired on FXX since 2013.

The "It's Always Sunny in Philadelphia" crew is headed to "Abbott Elementary" in the first of two crossover episodes.