TMDb/It's Always Sunny in Phil Celebrity Season 18 is in the can! The Gang is back with more disastrous schemes. Get the latest on the record-breaking dark comedy's filming wrap and release speculat... April 21, 2026 AceShowbiz - It's Always Sunny in Philadelphia has completed filming for its eighteenth season, moving the beloved dark comedy closer to release. The show, centered on a group of self-centered and ethically dubious friends running Paddy's Pub in South Philadelphia, has entertained fans for years with their often disastrous schemes.