Erica and Tina both go after their solo projects full force, but Tina has an epic meltdown moments before her big solo show - only Teddy can help because Erica is on tour. Warryn gets an ominous call from Sony.
Tina's confession on the radio about Teddy's infidelities leaves Erica panicked that her sister is hurting the Mary Mary brand. Tina's mess-up costs Warryn money, and Erica nearly collapses from exhaustion.
Erica desperately needs a vacation, so when Warryn cancels their getaway for a work trip in NYC, things get heated. But the real fireworks begin when Tina tells Erica it's time get Mary Mary back together.
While Erica is touring and unavailable for her sister, a frustrated "New" Tina tries to keep the "Old" Tina at bay while planning her wedding and meeting Teddy's estranged father for the very first time.
Personal distractions threaten Mary Mary's international performance. Tina battles Teddy long-distance and is preoccupied with her marriage. Erica's manager, Kenneth, wants her to focus on her solo career.
Mary Mary's Australian tour threatens to interfere with Tina and Teddy's reconciliation. Tina and Erica's father, Eddie Atkins, Jr., passes away. Erica's vocal injury threatens her performance at Essence.
Teddy reveals more about his infidelity to Warryn, threatening Tina's marriage. Tina and Erica head to the Bahamas to perform and celebrate their birthdays, and learn devastating news about their dad's health.
Erica and Tina's Fall Tour may be their last performance as Mary Mary, but will their magical chemistry on stage and sisterly love keep them together? Will Mitch survive as their manager or is his time up?
Mary Mary embarks on their Fall Tour, but Tina refuses to be pushed by Mitch, Goo decides to move to Atlanta to be with boyfriend, Justin, and a rift caused by Erica's solo venture threatens the future of Mary Mary.
The family is overjoyed when Tina gives birth to her son, Santana, but that isn't the only major change in the world of the Marys. Erica travels to Atlanta for her first solo performance, which falls flat.
Mary Mary's dream comes true as they become the first gospel group to perform on the main stage at the Essence Festival, but at nine months pregnant, Tina's constant bickering may end it all on a sour note.
Mary Mary heads to New Orleans for their hugely anticipated Essence performance. They receive a lifetime achievement award, but Tina's behavior only confirms for Erica that going solo is the right decision.
Mary Mary begins intense choreography rehearsals for their upcoming Essence performance, but when Teddy finds out that Tina is pushing herself too hard and suffers an emergency pregnancy scare, he may pull the plug.
Mary Mary is back on the road for an important radio show appearance and huge concert in front of the likes of Oprah in Dallas, but will tensions between the girls and their manager, Mitch, take center stage?
Being an award winning musical sensation is a dream come true for Erica and Tina, but Mary Mary's constant touring takes a toll on their lives when a performance keeps them away from home on Thanksgiving.