Chuck is having cataract surgery and, for the first time ever, must miss a day of work. Carol, eager to shirk her overwhelming intern duties, offers to take care of him. Meanwhile, Katie is excited for a peaceful day but with Chuck gone, Greg is reluctant to be the bad guy. As a result, "The Breakdown" descends into chaos as Greg is forced to say yes to Portia, Justin and everyone else's "great ideas for the show."

Carol has a midterm she must pass in order to keep her internship. Katie needs to choose between helping her mom and focusing on her hacking story, which she can't seem to crack. Meanwhile, Greg's wealthy estranged grandmother pays a visit to the office. Chuck finds her cold and cruel, but almost immediately falls in love with her.

Katie makes a huge discovery about the story she's been chasing and, with the help of Carol and the rest of the staff, concocts a scheme to get the story out. Greg struggles with balancing his conflicting loyalties to his family, co-workers and conscience.

Carol finds herself in a reverse "Christmas Carol" during which she learns that she has too much Christmas spirit and is driving everyone around her insane. Meanwhile, Chuck's estranged son, Petey, visits the office and Katie, who has been charged with babysitting him, tries to get the father and son to reconnect.

Carol is devastated to learn that her parents are getting a divorce after 70 years of marriage. Katie, still hurting from her breakup with Jeremy, is convinced that love is dead, but Carol is determined to prove that it's never too late to have a happy ending. Meanwhile, Chuck discovers that the reason for Justin's newfound happiness is the cute new barista at the coffee shop and proceeds to compete for her affection at the expense of his and Justin's friendship.

When "The Breakdown" staff finds themselves embroiled in a lawsuit with eccentric billionaire Fenton Pelt, Chuck is convinced he can solve the problem. But when Chuck's attempts to save the show backfire, he enlists the gang's help to pull off an elaborate heist. Meanwhile, after realizing that she has feelings for Greg, Katie is determined not to make a move on her unavailable boss. Her intentions are put to the test, however, when Diana St. Tropez demands that the two spend the night together fact-checking a story.

Diana St. Tropez returns with good news for "The Breakdown" staff: Fenton Pelt has agreed to drop his lawsuit on the condition that Chuck Pierce deliver a humiliating on-air apology and resign from news forever. Chuck, defeated, agrees, until Portia reminds him why he got into journalism in the first place. With Chuck's final broadcast approaching, Katie convinces Carol to reunite for one last job, and they race against the clock to find the one person in New Jersey who could disprove Fenton Pelt's claims and save the show.