A young fan tests Ross' resolve; Brad's doctor delivers shocking news; Muscles makes a last ditch effort to save his relationship; a day with Damian has Nathan feeling his age.

The gang goes to a wedding; Muscles and Bobby plan a romantic weekend; Ross tries an internet hook up; Nathan makes a date with Damian, then comes to blows with Nelson Van Eddy.

Lydia debuts her cabaret act; Brad makes a radical change; Nathan meets a man from Damian's past; Ross tries to save his marriage; Muscles attempts to rekindle things with Bobby.

Brad receives a message; Muscles learns Bobby's secret; Ross and Neal have a scary encounter; Nathan and the gang go undercover on Halloween to stalk Damian.

As Ross' sex tape goes viral, Nathan calls in PR specialist Dan Karmel to handle the crisis; Brad makes another attempt at gainful employment; Muscles meets Lucas' boyfriend; Lydia and Barbara have it out.

Muscles confides in his mom; tough love from a therapist leads Nathan to confess to Jake before butting heads with Nelson; Ross is forced to make a choice; Brad receives a last-minute rescue.