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.

It's Always Sunny in Philadelphia Season 15 Episodes...

• s15e01 - 2020: A Year in Review
• s15e02 - The Gang Makes Lethal Weapon 7
• s15e03 - The Gang Buys a Roller Rink
• s15e04 - The Gang Replaces Dee With a Monkey
• s15e05 - The Gang Goes to Ireland
• s15e06 - The Gang's Still in Ireland
• s15e07 - Dee Gets Stuck in a Bog
• s15e08 - The Gang Carries A Corpse Up A Mountain

It's Always Sunny in Philadelphia Show Summary

Five egocentric friends who run a neighborhood Irish pub in Philadelphia try to find their way through the adult world of work and relationships.

Unfortunately, their warped views and precarious judgments often lead them to trouble, creating a myriad of uncomfortable situations that usually only get worse before they get better.