When Ron hexes the day to prove superstitions aren’t real, things at the hospital start getting weird.

Rosa guides Seb and Lilliana through a dilemma. Meanwhile, Oly’s back at work and getting a glimpse into what her life could have been, which pushes her to go rogue.

Pete goes to rehab and finds himself unable to avoid misadventures as his old friend Machine Gun Kelly shows up intent on getting him high. Meanwhile, Pete's sister Casey is set to graduate without him there.

Walden hires an actress to play the part of his girlfriend and ends up falling for her. Meanwhile, Jake and Missi plan a rendezvous which doesn't go well when Alan is informed that Jake went AWOL from the Army.

Lyndsey asks Alan for a commitment, which he doesn't take lightly. Walden is picked up by a rich older woman, who sees him as a poverty-stricken love toy, and she takes him back to her place and seduces him.

Christy plans a baby shower for a nervous Violet.

Christy and Bonnie help Regina on her way to prison.

Violet finds the perfect couple to adopt her baby.

Max and Caroline take office temp jobs. While Caroline tries to climb the corporate ladder, Max deals with a boss who makes inappropriate advances.

Han fires Caroline when she insults his diner, so Max tries to mend their relationship.

Caroline is in a tizzy when she develops a rash after a romantic evening with her former boyfriend.

Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.

Penny's criticism of Wolowitz's romantic life pushes him into depression and he goes AWOL for a fighting robot battle the rest of guys are depending on him for.

Sheldon creates a scientific procedure for making friends.

Ross and Rachel compete to spend time with their other friends. When a lonely Ross is excluded from Rachel's ski trip with her pals, he visits Carol. Meanwhile, Chandler starts smoking again.

Monica agrees to a date with one of her customers, who turns out to be very well-off. Phoebe's half-brother visits and announces he's getting married to an older woman and Chandler uses a hypnosis tape to quit smoking.

After splitting from Ross, Rachel goes on her first date with Mark from the office. Joey develops a crush on his co-star in his new play and Monica continues to date Pete, even though she's not attracted to him.

Rachel regrets making a date for Chandler & Joanna, her boss. Joey's interest in Kate intensifies after they sleep together. Monica's aunt leaves her an antique dollhouse which Monica doesn't want Phoebe to play with.

Christy plans a baby shower for a nervous Violet.

Christy and Bonnie help Regina on her way to prison.

Violet finds the perfect couple to adopt her baby.

Han fires Caroline when she insults his diner, so Max tries to mend their relationship.

Caroline is in a tizzy when she develops a rash after a romantic evening with her former boyfriend.

Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.

Penny's criticism of Wolowitz's romantic life pushes him into depression and he goes AWOL for a fighting robot battle the rest of guys are depending on him for.

Sheldon creates a scientific procedure for making friends.

Ross and Rachel compete to spend time with their other friends. When a lonely Ross is excluded from Rachel's ski trip with her pals, he visits Carol. Meanwhile, Chandler starts smoking again.

Monica agrees to a date with one of her customers, who turns out to be very well-off. Phoebe's half-brother visits and announces he's getting married to an older woman and Chandler uses a hypnosis tape to quit smoking.

After splitting from Ross, Rachel goes on her first date with Mark from the office. Joey develops a crush on his co-star in his new play and Monica continues to date Pete, even though she's not attracted to him.

Rachel regrets making a date for Chandler & Joanna, her boss. Joey's interest in Kate intensifies after they sleep together. Monica's aunt leaves her an antique dollhouse which Monica doesn't want Phoebe to play with.

Christy's in the middle of tension between Bonnie & Alvin.

Christy & Bonnie help Violet through labor.

Bonnie is furious when Christy's poor financial decisions threaten the family's living situation.

Max and Caroline are invited to be extras on a popular TV show shooting a scene in Han's diner, but when Caroline catches the director's eye, he offers her an actual role - with strings attached.

Caroline's father asks her to go on a talk show to defend him when a former employee threatens to defame him in a tell-all book.

When Max and Caroline offer to deep-clean a previously hidden part of the diner they discover something that could relaunch their cupcake business.

Sheldon's solution to Penny's financial difficulty leads to a confrontation between Leonard and Penny's ex-boyfriend.

Leonard and Penny are drawn together after a disastrous visit from Leonard's mother.

A paintball game leads to a fight between Sheldon and Penny and romance for Leslie and Wolowitz.

Monica considers a dream job in Pete's new restaurant. Joey and Chandler adopt a baby chick and a duck and Ross misses a panel for the Discovery Channel to help Rachel, who may have a broken rib.

At the premiere of Joey's big play, Ross alone concludes Rachel's date is insane. Joey falls in love with Kate but she gets a big job in Los Angeles and poor Phoebe is on hold for days with a company she needs to talk.

Afflicted with a mysterious skin condition on his butt, Ross seeks advice from Phoebe's herbalist. Phoebe can't choose between dating a fireman or a schoolteacher and Monica can't decide what to do about Pete.

Monica must decide her future with Pete when he won't give up on competing in an Ultimate Fight. Chandler has a problem with his new slaphappy boss and Phoebe sets Ross up on a date with a woman who used to be bald.

Mandy struggles to get Georgie's family to join him for his first Thanksgiving without his dad.

Georgie joins a church to sell tires to the congregation; Mandy worries there is more to it than that.

Alan finds himself in a bind when his beautiful ex-wife makes a pass at him. However, being in a committed relationship with Lyndsey, Alan tries to do the right thing by turning down Kandi and telling Lyndsey. Meanwhile, Walden helps Berta celebrate her birthday.

Tired of dating or even meeting women who are only interested in his fortune, Walden decides to create an online persona as a poor schlub named Sam Wilson who is very much like Alan Harper (no job, no prospects, no charm). Then he meets Kate, a wannabe fashion designer.

Johnny and Stevie attend the regional hospitality awards, while Moira does everything in her power to stop Alexis from auditioning for Cabaret.

Max and Caroline are invited to be extras on a popular TV show shooting a scene in Han's diner, but when Caroline catches the director's eye, he offers her an actual role - with strings attached.

Caroline's father asks her to go on a talk show to defend him when a former employee threatens to defame him in a tell-all book.