Joey accidentally makes a date with a reporter from 'People' for Valentine's Day. He has the gang 'accidentally' bump into him and his date at the restaurant to ruin the mood, but his plans backfire when she thinks he's taking their relationship to the next level. A drunken Alex shares some sexual secrets with Gina. After Joey sends Michael over to hit on a table of girls, Michael actually becomes 'one of the girls.'

Given the challenge of creating a 30-second commerical for Dove Cool Moisture Body Wash, the teams excel at coming up with concepts but struggle with executing the focuses of their commercials. Once the teams are done shooting, they show their work to Donny Deutsch, an advertising agent, who shoots down both commercials, calling Magna's, which involves a chef massaging a cucumber with a gay twist at the end, too risque and sexy - almost a pornographic - and Net Worth's, about a losing runner who uses Dove to revitalize himself, too safe and idiotic. Both teams lose due to their disastrous commercials, and both teams meet with Trump in the boardroom, where Kristen is fired.

Grissom, Sofia, Sara and Greg investigate the disappearance of a woman coming home from a night out with a friend after her abandoned car is found on the edge of a highway. Catherine, Warrick and Nick investigate the deaths of a hunter and his prey, a Kodiak bear. Also, Sofia wants to leave the lab - she's unhappy about no longer being a supervisor.

Sandy attempts to make up for hiding Rebecca's return from Kirsten by planning a romantic Valentine's Day. Zach, Seth and Summer travel to San Diego to meet with a company about their comic book, but Seth focuses more on getting Summer back then pitching the comic book. Meanwhile, Julie returns from her vacation determined to reconnect with Marissa, and Ryan and Lindsay try to spend Valentine's Day together, but her relationship with Caleb interferes.

Valentine's Day is full of surprises. Grace tries to ignore the greeting card holiday but romantic urges eventually send her into the arms of the enemy -- none other than Nick, a hunky greeting card writer. In a dramatic change of events, Karen's former nemesis Scott Woolley tries to win her heart by showering her with gifts but Karen's eyes are on larger things -- her new overweight Internet date. Elsewhere, after dancing with a lesbian couple Will and Jack find comfort in each other's arms for the Valentine's Day spotlight dance.

Weaver is spending the day working in the ER when she meets her birth mother, who has disguised herself as a patient to see Kerry. Her mom is a devout Christian, in town with her choir, and does not understand Weaver's lifestyle. She offers her love, but Weaver just wants acceptance. Jake has been spending every night at Abby's apartment, which she says is for convenience's sake, but Neela thinks otherwise. Jake and Abby have trouble hiding their relationship at work, especially from Weaver. Pratt doesn't want to work with Jane. Ray gets a bedpan to the face during a fight between Carter and a Demerol junkie.

After postal worker Rosie Diaz goes missing during what seemed to be a regular workday, the team initially connects her disappearance to her cargo, which include $12,000 worth of the game Demon Storm, which all the kids were after. But when the team gets in touch with child protective services, they learn that Rosie recently had her foster children taken away after an anonymous abuse call. A search of her home uncovers a DVD containing child pornography, and the team starts to look at the case from another angle. Danny comments on Martin and Sam's obvious closeness, and wonders why they're keeping it quiet. Vivian learns that she has hypertrophic cardiomyopathy and will require surgery.