As the first week of treatment comes to an end, Tom begrudgingly decides to return to the Pasadena Recovery Center, followed by his girlfriend Monroe, who is suspected of having brought drugs onto the unit.
Past alumni successes from Celebrity Rehab return to encourage the patients to remain sober. The visit proves successful, as recovering alcoholic Brigitte Nielsen helps Dennis come to terms with his own alcoholism.
Jeremy London and his wife Melissa reunite while sober for the first time to discuss their son and Jason Davis comes to terms with some painful revelations about his past. Word leaks to the press that Rachel Utichel is in Rehab.
As the first week of treatment comes to an end, many of the patients' withdrawal symptoms cause them to be agitated and hypersensitive toward one another. Bickering between Janice and Rachel comes to a head.
Reaching the half way point in treatment, the patients become aware of the damage drugs have done to their loved ones. Jason Davis and Jason Wahler scheme to escape the unit but their plans backfire and police are involved.
Dr. Drew invites the addicts and their families to a lake house retreat to discuss the importance loved ones play in the recovery process and on an outing in Hollywood, Leif Garrett challenges authority and nearly relapses.