Rap Sh!t centers around two former best friends, Shawna (Aida) and Mia (KaMillion). Although the ladies were inseparable in high school, they grew apart when Shawna moved to New York for college and Mia became pregnant with her daughter, Melissa.

When we meet them for the first time in the pilot, Shawna works at a hotel after moving back to Miami. Despite the setback, Shawna continues working on her conscious rap career and posts her videos online. Meanwhile, Mia is a social media influencer and sex worker. Throughout the season, she references her OnlyFans page.

While their lives have both changed dramatically, Mia and Shawna reconnect after Shawna looks after Melissa during one of Mia’s jobs. Then, a drunken night out between the former friends ends with them freestyling in Mia’s car on Instagram Live. After their rap, Shawna apologizes to Mia for their friendship falling apart and Mia accepts.

In Episode 2, the friends decide to form a rap group. Soon, a local "plug" named Chastity (Jonica Booth) offers to work as their manager. Due to them not knowing much about the music business, they accept Chastity’s offer.