Linda is depressed and sleeping on Hattie's sofa. Broke and feeling like she has no marketable skills, Linda considers working things out with Lionel. At the same time, Danny finds his own independence when he leaves the nest and agrees to move into the extra room at Sam's apartment.
Linda shows up at Floyd's tiny studio apartment looking for a place to stay since Hattie kicked her out. Floyd petitions Hattie to help her needy daughter; however, Linda is given a dose of Hattie's "tough love."
Hattie lets Linda, who has returned from a budy day full of job interviews, run the diner while Hattie runs to the bank. Unfortunately, though, the health inspector pays a surprise visit to the diner, and he shuts down the restaurant.
When Vivian confronts Hattie about her defacing her billboard, the entire restaurant overhears Hattie warn Vivian to be careful that her restaurant doesn't burn down. Vivian's Diner, suspiciously burns to the ground on that same night.
With the Love Train being financially strapped and Vivian's diner having burned down, Hattie accepts an offer from Vivian to form a partnership that will increase their revenue. Elsewhere, Danny, Sam and Drew vie for a promotion at work.
Hattie fears that Danny might move back in due to Sam's constant partying so she takes matters into her own hands and shows up at one of Sam's parties with a drink called "White Lightning." Sam wakes up the next morning handcuffed to Hattie.
Danny withholds his half of the rent until Sam agrees to rein in his wild lifestyle. Danny then gives Sam an ultimatum about his partying, which causes Sam to verbally evict Danny from their apartment.
Sam has a verbal altercation with a beautiful woman at the Love Train Diner after she turns down his advances. Then, Danny and Sam arrive late for work and find that the woman from the diner is their new boss, Marianna.
After returning from her doctor's appointment, Hattie overhears Vivian telling everyone about her horse, Old Girl, having to be put down because she has cancer—and Hattie thinks they're talking about her! Believing that she's dying, Hattie adopts a kinder attitude.
Hattie slips and falls while working late at the diner. Linda insists that Hattie go to the hospital, but Hattie refuses. Later, while Hattie is being cared for by family and friends, she begins to drive them crazy by constantly asking them to wait on her hand and foot.
Linda has the bright idea to celebrate Hattie's 75th birthday by throwing her a surprise party. Floyd tries to warn Linda against this idea because he feels it would be too dangerous, but she goes forward with the party despite Floyd's objection.