Marissa plots to ruin her mother's happiness by inviting someone from her mother's past to the wedding shower, while Sandy attempts to hide Theresa's return to the O.C. from Ryan. When Ryan discovers Sandy's lies and Theresa's reasons for coming back, he puts himself in a dangerous situation. In the meantime, Seth's unimpressive first meeting with Summer's father leaves their relationship in doubt.
When a warlock brings Connor back into Angel's life, Wesley finds out that Angel has tinkered with the memories of his friends.
When the gang sees Mitch at a putt putt course, they laugh it up at his pathetic job until they accidentally hit him in the head with a golf ball. Feeling sorry for him, Eric invites him to join the gang in the basement. But it snowballs from there when Mitch obsesses over Donna. Meanwhile, Pam doesn't see what the big deal is about rejecting Bob's offer to move in together, since she is dating another man.
The sisters have an explosive argument on Mama Joe's birthday; as Bird and Lem drift further apart, they each find refuge in other partners.
LAPD Detectives Joe Friday and Frank Smith methodically investigate homicides.
Things look brighter for Dr. Tenma, now that Dr. Heinemann is dead. His career takes off, and even Eva tries to win him back. But unfortunately, all that success has drawn the attention of Detective Lunge.
As they kick off their season against a rival team from Stonewood, the local Dog River hockey team finds itself at a crossroads. Brent is a great goalie and is being taken for granted by his teammates, so when an offer from the rival team comes his way, he has to seriously consider his options. Meanwhile the other players are having trouble scoring and might need to take some advice from an unlikely hockey expert. Then team super-fan Emma learns the hard way that you should never mix cars, your husband and a hammer on game night.
Nick 's future at the firm is in question because of because of a lawyer Burton thinks quite highly of but he doesn't feel she is ready to be a partner in the firm just yet. Sandra however blames Nick for not being voted into the firm. Sandra files a sexual discrimination lawsuit against Nick and his firm causing Jake to hold an executive meeting to consider what action to take against Nick. Burton is worried about his son 's future at the firm.
Jason and Richard are sued. Rory is upset by a decision Dean has made. Dean is told to stop spending time with Rory.
Vic and the Strike Team decide to take risky measures to protect themselves from being linked to the Money Train heist. Unfortunately, their plan is interrupted when one of Vic's open cases is suddenly linked to a Narco Corrido song.
Lucas must make a difficult decision regarding Brooke. Haley considers having sex with Nathan.
Jack reluctantly works with Kim on an undercover job that may help them gain an advantage over Saunders. Palmer informs his cabinet of the crisis, while Saunders makes yet another demand. Chase tracks down the man who left the hotel and learns that the virus is spreading to the general public.
When it becomes obvious that a forensics expert raped and murdered a student, the investigation focuses on a criminology professor Cragen arrested decades earlier for similar crimes, but is the professor a perpetrator or a victim?
A man's gunshot-induced amnesia causes Jones and Medavoy to concoct an unconventional way to nail his assailant. Meanwhile, a man Sipowicz put away twenty years ago for raping and murdering a 12-year-old girl goes free after DNA testing exonerates him, and Ortiz and Ronson bust a gruesome underground network pre-teen prostitution ring.
Courting unnerves Frasier, whose wooing of a winsome matchmaker is constantly interrupted by her disarming beau, a dedicated environmentalist who's also quite cosmopolitan.
Stuck at home in recovery, Ozzy grows restless and cranky. He misses Sharon, hates the bulky neck brace, and laments the extra pounds he’s packing on without his workouts.
Cate banishes C.J. and grounds Bridget for going to C.J.'s college keg party. Jim has to take a written drivers exam after being pulled over with an expired license.
J.D. hooks up with Danni again, after Sean returns, but he can't forget about his passionate night with Elliot. Meanwhile, Dr. Cox realizes, that he might actually have a crush on the one doctor he loathes.