Erica finds out how difficult a solo career can be without a manager and the Mary Mary budget. Tina stirs things up with Warryn and her record label by planning her solo project completely on her own.

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.

Tina and Teddy renew their vows in a stunning sunset ceremony. Teddy and daughter Laiah sing Tina's new songs. Mitchell confronts Erica at the wedding, infuriating Goo and Warryn.

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 to get Mary Mary back together.

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 is forced to go to an event alone because Tina won't go. When Tina refuses to do Erica a favor, lines are drawn. Warryn pushes Erica to quit Mary Mary.

Mary Mary sets sail on a cruise, but Erica has decided it's time to end Mary Mary. When Tina resents the decision things get ugly between the sisters.

The girls make their way to St. Louis for their farewell Mary Mary concert and tensions continue to grow between the two and Tina is MIA. Tina and Mitchell meet to discuss her solo project.

Sisterly rivalry sets in when Erica is up for several Dove Awards. Meanwhile, Mitchell causes an uproar when he crashes Goo Goo's photo shoot, tries to get her fired and confronts Erica and Warryn.

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.