When the office celebrates a promotion for Clark, Ken is oblivious since he lives in his own world…it’s the last straw for Clark dealing with Ken’s selfish ways. Clark writes a fake complaint comment card about Ken, so he’s forced to attend a training seminar for better bedside manners, which leaves Allison at home to have dinner with Ken’s parents.

Ken's sister Wendi, a successful doctor/TV host on a medical talk show, comes to visit the family and tension ensues. Ken can't admit that he's jealous of his sister's newfound success. So when Wendi invites Ken to be a guest on her show, he makes a mockery of it.

Molly rebels and gets a Japanese tattoo, which spirals Ken and Allison into having a cultural face-off. At a holiday dinner, they push their traditional dishes on their guests, while Dave documents the Thanksgiving events for a school project. Julie invites the office over to her place – but Damona and Clark try finding a way to leave early so they can make it to their other Thanksgiving plans.

When D.K. tells Ken he moved into the Park home because he’s gotten a divorce, Ken can’t shake the Korean cultural understanding that divorce equals failure and takes a look at his own marriage. Meanwhile, the divorce news causes Dave to reflect on his relationship with Emily.