You're invited, How I Met Your Mother fans, to the world's worst housewarming party.

On tomorrow night's new episode of the CBS sitcom, Marshall and Lily will attempt to welcome everyone to their new residence. But the shindig turns into a near-fight between Ted and Marshall's boss, as well as Barney ending up in bed with a divorcee.

See the shenanigans to come, which includes someone on fire, now:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.