Supergirl

Supergirl and the team go up against Leviathan and Lex, but Supergirl knows the only way to stop Lex is by sacrificing herself.

As the stakes with Lex are higher than ever before, Lena must decide how far she is willing to go to stop her brother. Meanwhile, Alex is brought to her breaking point.

While Lena and Lex battle for control of Luthor Corp, Supergirl makes a new ally.

Supergirl discovers a way to escape from the Phantom Zone, but it comes with some dangerous strings attached. Meanwhile, Lena joins the team on a mission, but has second thoughts.

Nia and Brainy travel back in time to save Supergirl from the Phantom Zone, but when their ship crashes on the scene, they meet a young Kara and a young Cat Grant (ELIZA HELM).

In the second part of the flashback episodes, Young Kara experiences Kryptonite for the first time, while Nia (NICOLE MAINES) and Brainy are trapped by invading aliens.

As the Super Friends brave the Phantom Zone to bring Supergirl home, each member of the team is confronted by visions of their worst fear. Series star DAVID HAREWOOD directs.

Supergirl and Zor-El make their return to National City, determined to keep the Phantom Zone behind them.

Kelly and Kara investigate prison abuse when a young, orphaned alien boy fears there's something wrong with his incarcerated brother. And Nyxly crashes one of Nia's dreams.

When a building in the Heights that was set aside for low-income housing is suddenly at risk to be sold to a major corporation, Supergirl recruits Orlando to help her win over the city, but things go awry when Nyxly shows up.  Meanwhile, Nia trains with her mother (guest star KATE BURTON).

While Lena visits her mother's birthplace in Ireland, Supergirl and the team learn Nyxly's dark history from a familiar face from the past... Mr. Mxyzptlk (THOMAS LENNON).

When disaster strikes and Supergirl is busy, Kelly embraces her power and steps into her role as Guardian to lead the way and restore justice to her fallen community.

Supergirl & the team race Nyxly for control of a magical totem that controls courage, but each must first pass a test of courage. Meanwhile, Lena struggles with her newfound gift.

Lena must accept her newfound powers in order to help her super friends, while William struggles to write a story on Team Supergirl that makes everyone happy.

While Alex faces the biggest challenge of her life, Supergirl continues to fight Nyxly, but after she kidnaps William, Supergirl realizes she needs to be more proactive.

With a nightmare monster in National City, Dreamer goes in search of the Dream Totem, but needs to ask her sister (HANNAH JAMES) for help.

While Alex plans the perfect proposal for Kelly, Lex Luthor returns to be by Nyxly's side, forcing the team to deal with their biggest foes at the same time.

Determined to keep everyone safe from Lex and Nyxly, Supergirl doubles down on patrol, especially as Alex and Kelly's bachelorette party is coming up. Meanwhile, Alex is torn between duty and finally allowing herself the time to enjoy her new family. Lastly, Brainy receives heartbreaking news, and William clashes with Andrea over her recent coverage of Lex.

Supergirl and her friends take drastic action after a loved one is kidnapped by Nyxly and Lex. An unlikely ally steps in to help the team.

Supergirl is joined by familiar faces from the past to help her stop Lex and Nyxly for good. Meanwhile, Alex and Kelly prepare to walk down the aisle.