After giving birth, Star ends up jeopardizing everything she has worked for, while Simone fights for her family. Meanwhile, Carlotta opens up about buried trauma from her past, Cassie puts her neck on the line to save her nephew, Alex's career is skyrocketing and the team begins to think about the future of their musical careers.

Carlotta does what she can to make the Rhythm and Bells Festival a success. However, challenges arise when Star ends up in a legal bind, Alex makes a major career move, Simone is hiding a secret and Cassie gets out of jail seeking revenge. Meanwhile, Derek and Ruby volunteer at the shelter, where Ruby comes face-to-face with the man who attacked her. Then, tempers flare as Carlotta and Cassie's father, Calvin, shows up unexpectedly.

Carlotta returns to Gravity Records, but finds out a lot has changed. Star meets Jackson's mother, Becky, and makes a shocking discovery. Meanwhile, Simone asks Nina for help when Angel returns in an unlikely way; Alex, still reeling from her fight with Derek, struggles with writing her own music; and Noah becomes dangerously paranoid and enlists his father, Bobby, as his new manager. Then, Cassie and Carlotta take steps towards making amends and Carlotta finds healing in confronting her father, Calvin.

Gravity Media recruits social media influencer Chloe David to attract more attention to Carlotta's festival, but Take 3's plan to hijack attention to their album doesn't go as planned. Cassie's relationship with Xander gets more complicated and Star must face her fears in order to build her family with Jax. Meanwhile, Detective Montero puts Derek in a dangerous position that could cost him everything.

In an effort to boost ticket sales, Mateo brings on controversial rapper Lil Dini, who clashes with Take 3. Star and Noah confide in each other about their relationship issues and Simone is put in a sticky situation when Jackson is cast as her co-star in a movie. Meanwhile, Derek's keeping a secret, Cotton's suspicions about Cassie grow and Xander pushes Cassie to find the rat in her organization.

Carlotta goes missing, suspicions about Olivia rise as she continues to pursue a friendship with Alex to cope with the loss of her sister. Maurice and Mateo settle on an agreement that tests Noah's loyalty. Miss Bruce and Bobby connect over their similar pasts and Noah, Simone, and Star try to keep Carlotta's Music Festival afloat in her absence.

Still stressed and grieving, Carlotta lands celebrity host Ryan J to host Gravity Media's Snowball event, but it doesn't come easy. Meanwhile, Star finds out that Maurice stole from her, and Derek becomes skeptical about Alex's super-fan-turned-bestie, Olivia. Then, Simone is asked to speak at the Orange Ball; Cassie does business with her ex, Xander; Maurice gets a blast from the past; and someone's fate is revealed.

In an attempt to "go legit," Cassie embarks on a new venture with a businessman, that interferes with Carlotta's work. Meanwhile, Noah struggles with making a contract decision under the watch of his father, Bobby, who is now back in his life. Then, still struggling with the death of a super-fan's sister, Alex helps the fan start a music career. Also, a shocking discovery causes Star to take family a little more seriously, Simone finds out a secret about Mateo she can't keep to herself and Andy is back in trouble.

When Mateo pulls a shocking stunt to reveal Star's pregnancy, the social media trolls go wild. Meanwhile, Simone faces a choice between her marriage and career, Carlotta and Cassie continue to battle it out and Maurice and Cassie team up for an unlikely ploy. Then, Derek returns home to find Miss Ruby in trouble.

Three months later, Star returns home from touring, and Alex and Simone's fates are finally answered. Carlotta and Cassie's sibling rivalry continues, as the two grapple with the aftermath of Cassie's big mistake, and Christine is caught in the middle. When Carlotta's back is against the wall, Midtown Sound's strength and future is tested by Mateo Ferrera, and Star's big announcement leaves a lot of questions unanswered.