Still reeling after learning about Lena's secret, Supergirl asks Guardian for a favor that could alter his relationship with Lena forever. Meanwhile, with all three Worldkillers united, Supergirl and the team brace for an epic battle.

Starring:

Melissa Benoist, Mehcad Brooks, Chyler Leigh, Jeremy Jordan, David Harewood, Calista Flockhart, Chris Wood, Floriana Lima

Genre:

Action, Sci-Fi