The sister competition heats up as Erica and Tina release their singles on the same day; who is No. 1; Tina fears she's pregnant and hesitates to tell Teddy; Erica breaks down at a New York show.

Erica and Tina get tricked into performing a Mary Mary show in Manchester, but a terrorist attack threatens everything; Tina and Teddy help a troubled celebrity couple after a cheating scandal.

Erica & Tina discover Warryn tricked them! The Marys travel to Africa, but when their plans derail, will they miss their show? Goo’s shocking secret.