It's Always Sunny in Philadelphia Season 15 (2021)

The Gang looks back on 2020 to justify their numerous PPP loans. In doing so, it is revealed that they contributed to the chaos of the past political year way more than anyone could have imagined.

Upon discovering that their self-made “Lethal Weapon” sequels have been pulled from the local library, the Gang decides to address their political incorrectness by making another film: “Lethal Weapon 7.”

It’s the ‘90s, and the Gang hangs out one last time at the local roller rink before going their separate ways.

When the Gang suspects Dee is menopausal, they scramble to find a new employee for Paddy’s Pub. Meanwhile, Dee decides to put her acting career on hold in order to mentor young actors.

The Gang’s in Dublin! Dennis longs for a charming, authentic European experience, but ends up helping Frank with some of his business’s “dirty work.” Mac and Charlie learn about their Irish heritage. Dee rushes to the set of an Irish soap opera, where she will play the role of “Obnoxious American MILF.”

Dennis and Dee explore their new accommodations in the countryside; Frank accompanies Charlie to find the truth about Charlie’s Irish childhood pen pal; Mac has an identity crisis and decides to join the seminary.

Guided by a young priest, Mac spends a day at the seminary to truly understand what it takes to become a priest. Dennis and Frank plan an elaborate trap at the castle to humiliate Charlie’s pen pal. Dee prepares for a date with an Irish doctor, only to find herself sinking in a bog. Having learned of his pen pal’s true identity, Charlie bonds with him and makes a choice that will forever change the Gang.

The Gang attempts to ascend a mountain in order for Charlie to fulfill an old and mysterious Irish burial tradition. But one by one, the Gang backs out until Charlie is left to honor the dead body alone.