Stan and Hayley compete in collecting data for the US Census; Klaus has Steve and his friends model for his new camera.

After the team returns from a mission, Zari finds herself trapped in a time loop that results in the Waverider blowing up over and over again. Zari soon begins to suspect that the answer to stop what is happening might lie hidden among her fellow shipmates’ secrets. But in investigating them she starts to understand her place on the team.

The team learns more about the killer. Moore and Sara share an intimate moment. Kreizler seeks advice from an old mentor. Roosevelt takes action.

Arie meets Kendall's parents in L.A; travels to Weiner, Ark. where Tia's parents batter him with questions; stops in Prior Lake, Minn. for a romantic afternoon with Becca K.; and endures a tense dinner with Lauren B.'s family in Virginia Beach, Va.