After much anticipation, the unlikely meeting of the two worlds unfolded on Wednesday's installment of "Abbott Elementary." ...

The Abbott Elementary & It's Always Sunny In Philadelphia crossover was a hit, but Glenn Howerton’s Dennis was mysteriously ...

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.

Their next test? When the cast of “Abbott Elementary” appears in an episode of “It’s Always Sunny in Philadelphia,” as is planned for the coming season. We now know that the “Sunny ...

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

The star of the FX series also admits he was initially hesitant about the crossover concept as 'It's Always Sunny in ...

With the first part of 'Abbott Elementary' and 'It's Always Sunny in Philadelphia's crossover airing Wednesday on ABC, ...

Claim a square if the gang speaks to the camera crew, pitches a horrible business idea or scars a student for life.

In the newest Abbott episode, "Volunteers," The Gang gets educated. The Abbott Elementary/It’s Always Sunny in Philadelphia Crossover Brought Out the Weirdest of Both ...

Until then, I’ll be theorizing about the trouble Dennis got into off-camera and hoping those hijinks are shown on-camera ...

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

A new “Abbott Elementary” episode brings volunteers from “It’s Always Sunny in Philadelphia.” The crossover episode airs Wednesday, Jan. 8, at 8:30 p.m. ET on ABC.