At Quantico, the Class of '09 must pass a physical fitness test or face expulsion. The trainee most at risk is Tayo, and as we see him struggle in the past, in the present, he faces one of the most dangerous threats the Bureau has ever experienced. In the future, we see how these shocking events were behind the radical changes he's made to the Bureau.

At Quantico, the Class of '09 faces the meaning of taking a life. In the present, the Agents must thwart a terrorist attack and to save lives, they must take a life. In the future, we come face to face with their trauma.