"G.B.F." tells the story of two closeted best friends, Tanner (Michael J. Willett) and Brent (Iacono). Brent longs for the spotlight and has a plan that will make him the most popular kid in school. He believes that coming out will make him instantly popular, as the newest must-have teen girl "accessory": The G.B.F. Tanner on the other hand, would rather fly under the radar and graduate from high school without ever being noticed. When things don't go according to plan and Tanner is outed instead of Brent, the two boys go from B.F.F.s to instant frenemies and the three most popular girls in school - queen-of-mean bombshell Fawcett (Sasha Pieterse), drama club diva Caprice (Xosha Roquemore) and sweet, Mormon good-girl 'Shley (Andrea Bowen) launch an all-out social war to win Tanner's status-enhancing friendship. Meanwhile, Tanner must choose between skyrocketing popularity and the friends he is leaving behind.