Rayna, an aging country music star, is upset when her record company asks her to tour as the opening act to a new up-and-coming singer named Juliette.

An investigation shines unwelcome light on Rayna's past with Deacon.

Juliette's mother shows up. Juliette calls Deacon to the studio to record the song they wrote (Undermine) in another attempt to sign him to her band. Rayna's girls perform in their school talent show. Rayna discovers information about her mother that gives her new perspective on her father, but they are still feuding. Scarlett and Gunnar go into the studio to record their demo, but things do not go smoothly.

Deacon finally accepts Juliette's offer to tour with her, and Rayna's not happy about it. Liam wants Rayna to change labels, neglecting to mention he has a side deal. Rayna fires him and hires a woman guitar player. Rayna gets her own label and wants to sign Scarlett and Gunnar. Rayna struggles with being on the road with Deacon, and finally texts him to come up to her room. When she opens the door, it's Teddy who came to tell Rayna he wants a divorce. Juliette slips a ballad that she and Deacon wrote into the show and the crowd response is OK, but Glen has a fit. The song ends up online and is popular. Scarlett is having trouble making rent and Gunnar hates his roommates, so they agree to move in together platonically. Avery has a camera follow-along interview and takes them by Scarlett's house. That evening Gunnar and Avery get into a fist-fight.

Deacon hates parties and watches Old Yeller every birthday, so naturally Juliette plans a surprise party for him. Rayna tells Teddy their daughter knows about Peggy, and Rayna will not cover for him like she did with the press. Despite filing in another county, the divorce is all over the tabloids and the paparazzi are all over Rayna and her girls. A crisis manager tells Rayna not to be seen in public with any man but her dad, but Rayna defiantly has Watty take her to Deacon's party. Rayna wrote a special song and Juliette says cattily that she's going to sing for Deacon, only she has to leave when her mother gets drunk. Teddy appoints Coleman as Deputy Mayor, infuriating Rayna's dad Lamar. Avery is in the studio and tells Dominic the music isn't right, but doesn't realize Dominic's responses are recorded. . . he isn't even there. Gunnar finds a gun in his brother's bag and Scarlett hits the roof. Scarlett gets Deacon to the party (attended by music celebs) on the pretext of finally hearing her and Gunnar sing. Two detectives pick Gunnar up at the party. Juliette gives Deacon an old yeller (yellow) dog.

Juliette and Dante are still in bed when Rayna knocks on the door to say she has to go back to Nashville for a family emergency, and may have to cancel that night. Later Avery is searching for equipment, sees Dante in bed with Juliette, and Dante fires him. Deacon gives Stacy a key to his place and plans to quit the road, then hears about Lamar. Deacon challenges Juliette about Dante and she storms off. Deacon confronts Dante and says until he hears from Juliette, Dante can't fire Avery. Jolene accuses Juliette of stealing Dante from her and realizes they're sleeping together. At the hospital, Rayna and her sister see Lamar who is less than appreciative. Watty comes to the hospital, Lamar has a fit and ends up in surgery. Rayna realizes Watty is the musician her mother was seeing, and hears her mother was leaving Lamar the night she died. Tandy finds the connection between Lamar and Peggy. Scarlett tells Gunnar he's still having nightmares. She wants Gunnar to write with her, but he says he can't. Will gets closer to Scarlett and Gunnar; he and Gunnar play chicken with a train.

A legal dispute threatens to break apart the family; Juliette demands to perform at the CMT Music Awards; Will and Zach are drawn closer together.