Allison and Ken try to prove each other wrong about a patient's diagnosis on Allison's first work day at Welltopia.

Molly and D.K. try to scare off a neighbor girl standing outside the kitchen window staring at Albert, while Ken is surprised that Pat has been asked to emcee the annual Welltopia banquet.

Ken learns D.K. is divorced and starts to worry that the end is near for his own marriage. Meanwhile, Dave ponders his grandfather's situation and how it relates to his relationship with Emily.

Allison is saddened that Dave doesn't get excited about Halloween anymore, but when D.K. treats him to a scary story about Korean ghosts, or gwishin, that's acted out by the Welltopia staff, it might just do the trick

Dave gets invited to appear on "Shark Tank" to pitch his latest invention, but an initially excited Ken ultimately worries about how his son will be treated. Meanwhile, Molly's internship at Welltopia gets rave reviews from Pat.

Allison talks Ken into driving her parents for Thanksgiving dinner, but everyone's antics drive her crazy.

D.K. decides to move in with his new girlfriend; Pat asks Dave to pretend to be his adopted son.

Ken feels he should apologize to a patient for missing a crucial detail, but Pat doesn't think it's a good idea. Meanwhile, Dave's parent-teacher conference is shaken up by D.K.

Allison wants the Welltopia Christmas party at the Park home to show her fun side. In the meantime, Clark wants to give Connor the perfect gift, but he gets upstaged.

Allison starts feeling insecure when Ken's attractive new intern begins flirting with him. Damona's boyfriend, Eric, learns she had a musical past. After their first date, Molly wonders if Jae really likes her.

Ken is on the brink of insanity after learning that Molly's new boyfriend is quitting his pre-med studies to be an artist.

A film crew follows Ken for a documentary about a typical day at Welltopia, but the everyday nuts and bolts of the job make him think being a doctor isn't all it's cracked up to be.

When a high school basketball player hurts his ankle, Ken makes a diagnosis that may prevent the young man from playing in the big game.

Ken lets Allison think that a Valentine's Day poem Dave wrote to his sweetheart was meant for her.

Pat has a strange rash that Ken thinks is caused by a stressful relationship with his girlfriend. Meanwhile, Dave wants his breakup with Emily to be as painless as possible; and Clark wants Allison to visit a new meditation studio.

Dr. Ken's wife finds a benign lump.

Ken is tormented by an old professor who comes in for treatment. Alison has a new assistant who is too chatty. Damona ends her relationship with Eric and tries to take a new relationship with Pat slowly.

Ken stumbles upon news of Clark and Connor's surprise nuptials, so he tries to think of a way to get everyone to come. Meanwhile, Damona hopes to convince Allison to go by telling her that Ken is planning to renew their wedding vows.