After the disastrous scene at her parents' recent social event, Lorelai begs her boyfriend not to give up on their relationship.
Cosmo and Wanda receive invitations to their high school reunion.
Dr. House takes Cuddy's challenge to go off his painkillers for a week, but the effects of his withdrawal symptoms may put his patient in danger.
This episode demonstrates the production processes for 3D commercial signs, hardwood floors, corrugated polyethylene pipe and mattresses, and shows how each is made.
When the body of a teenager is found with her older cousin's I.D., Benson and Stabler investigate only to learn that that the teen had been part of a group who had 'hooked up' online. As their investigation intensified, they realised that the victim was the object of an older man's obsession, but before they can arrest him he also turns up dead.
A squad member is shot while storming an apartment; Clark and Jones investigate the bludgeoning death of a woman whose wealthy husband was going to finance a friend's salon business.
Erin Kendall claims to have seen a murder of a sailor in an apartment across from hers. Gibbs assigns the case to McGee who believes that he can resolve it himself. However, due to the lack of physical evidence, McGee turns to the team to help him.
Cheryl cooks dinner for Dana and her boyfriend and lets him believe that Dana actually did the cooking.
When J.D. meets a former writer from his all time favorite TV show "Cheers," he begins to picture his life at the hospital as a bland, multiple camera sitcom, where everything is perfect and wraps up nicely. Back in reality, Cox is relunctant to fire an amiable cafeteria worker, while Turk and Carla struggle to keep their promise of constant romantic affection afloat.
As his marriage with Haley continues to go wrong, Nathan goes into a emotional crisis and becomes the "bad" Nathan of the past. Karen continues to struggle and try to figure out what would cause Lucas to move in with Dan. Peyton and Jake's relationship gets greater.
Ladies Night at the Jockey proves to be more trouble than its worth. For one thing its full of blokes which only serves to anger Jez. Fiona eyes up footballer Ryan but when she wakes up the next morning it isn't Ryan who is lying next to her. Instead its the less-than-desirable Joey Dawson. Fiona decides to take contraception but before she can actually take them Liam swallows them and then Marty traps Joey's arm in a door. At the hospital they discover that Joey's arm is broken but Liam is fine and there will be no ill effects. A follow up visit from social services isn't as simple for the Gallagher family. The inspector is Katrina a woman who went to school with Fiona and who's life was apparently hell because of Fiona dubbing her "Sperm Whale". But the family pass the visit but Katrina reveals she's engaded-to Joey Dawson. At the Jockey Joey confesses he loves Fiona while Ryan lets slip to Katrina that Fiona and Joey were all over each other the night before.
When Benny demands money for a box of George's old things, he is shocked to learn Benny (unbeknownst to him) helped he and Angie start up a life, but she also owes George money from a source he never knew about.
Allison investigates the supposed suicide of a girl who was dating D.A. Larry Watt's son Greg. When the girl's body is found in a ravine, new evidence is presented that implicates the defense attorney. Meanwhile, Joe is concerned about one of his colleagues after Allison has a premonition of the colleague having a heart attack.
When the CSIs find a woman swallowed whole and killed by a gigantic snake, they uncover a covert drug smuggling operation. Evidence leads Horatio and the team to a drug smuggling operation where large snakes are suspected of be being used to bring illegal drugs into the country to avoid detection by customs. However, when Horatio finds that Clavo Cruz, a nemesis of Horatio's who hides behind his diplomatic immunity, may be behind the operation, the team must find a legal way to put the criminal behind bars. Meanwhile, Wolfe must find the truth when two women each claim that they are the real victim of identity theft and the other is the culprit.
Jack and Tony are able to trace Dina's location, but Behrooz slips through their fingers. Dina demands a full pardon for her son in exchange for information on the override device. Edgar wrestles with his emotions when his mother is trapped in the path of the nuclear fall-out. Behrooz turns to his uncle for help, but Navi closes in on him before he can get away.
Marie is astounded when Franks puts salt on her homemade lasagna, leading her to believe that she's lost her touch in the kitchen. However, Ray and Robert discover that the problem is Frank, who has lost his sense of taste.
When Judith decides to take a vacation, the brothers have to take care of Jake during the week. Alan finds it challenging, and even forgets to pick up Jake from soccer practice. When Alan finds out that he has to go to the I.R.S. because they're auditing him, he forces Charlie to take care of Jake, and Charlie doesn't do any better then Alan.
Sam is over the moon about hosting the "whale of all whales" - a billionare (guest star Dean Cain) she's hooked to stay at the Montecito. With her hands full, she tosses her other clients onto Mary and Delinda. Things get out of hand when Mary's billionaires turn out to be cheating the horse racing system requiring Danny to fly up to come to her aid. Meanwhile, Sam falls apart when she realizes that the billionare is her husband, whom she's been separated from for seven years. Elsewhere, Ed is slapped with jury duty on Valentine's day and deals with the wrath of Jillian (Cheryl Ladd), who thinks he's avoiding the special day on purpose. Despite his efforts to get himself off of the hook, the judge refuses, leaving Ed to have to trust Mike with manning the homebase.
Lacey gets the job of convincing a good-looking young doctor to set up shop in town. But Lacey and the rest of Dog River get less than they bargained for when the doctor arrives. Then Hank has to find a place to crash while his house is getting fixed, setting off a chain reaction of house swapping as people try to avoid living with him. Finally Brent is annoyed when he inadvertently winds up with what might be a counterfeit 100 dollar bill only to find it has a positive affect on his life.