Nathan recalls how he first met Brad, Muscles & Ross as he begrudgingly prepares for his 50th birthday party.

Gifts, cocktails and the boys' valiant efforts to cheer up Nathan on his 50th birthday have less-than-successful results; Brad regales the boys with stories of his sexual conquests of the past 24 hours.

Nathan's party gets worse and worse; Muscles meets a potential Mr. Right; an encounter with an old one-night-stand has Nathan feeling his age; Ross' cheerful facade cracks.

Living vicariously though his friends' adventures leaves Nathan feeling he has no life; Ross confesses his recent marital woes; Brad's latest conquest bruises his self-esteem; Muscles has too much in common with his new boyfriend.

Brad gets revenge on his latest hook-up; Ross receives some provocative marriage advice; Muscles tries to discuss his situation with Bobby; after a cryptic session with his shrink, Nathan has a mind-blowing encounter.