In season two, Courtney and her friends take on one of the most frightening adversaries in DC's mythology – the dark entity of corruption known as Eclipso.
With summer break around the corner, Pat suggests the family take a vacation after seeing that Courtney has been spending too much time focused on being Stargirl and not enough time on her schoolwork. Meanwhile, as Beth attempts to reconnect with Chuck, she stumbles upon a major secret her parents have been keeping from her. Elsewhere, Yolanda continues to be haunted by Brainwave's death, and Rick secretly tracks Solomon Grundy after suspecting he may still be in the area.
Still on the lookout for evil in Blue Valley, Courtney grows suspicious after an unexpected visitor shows up at the Dugan house. Meanwhile, Barbara and Pat become concerned after a visit from a mysterious antiques collector named Richard Swift. Elsewhere, Cindy puts her plan in motion.
After getting a taste of the superhero life, Mike pleads with Pat to let him join the team. Elsewhere, after seeking help from Thunderbolt, the JSA prepare for a confrontation with The Shade.
As Pat considers whether he should come clean to Courtney about Eclipso's past, a surprise visit from Crock and Paula catches him and Barbara off guard. A tense run-in with The Shade provides Courtney with some valuable information. Finally, Cindy makes her move.
As Pat and Courtney clash over their next steps in their search for Eclipso, ominous weather conditions in Blue Valley hint that he may be near. Meanwhile, Cindy's plan to recruit another student takes an unexpected turn, and Cameron opens up to Courtney.
Cindy and her new team make their move against the JSA leading to an epic showdown.
When the guilt over Brainwave's death becomes too much to handle, Yolanda is forced to make a heartbreaking decision.
With his world crashing down around him, Rick focuses his attention on protecting Solomon Grundy after learning hunters are after a bear in the woods. Meanwhile, Beth becomes the target of Eclipso's latest plan.
As Eclipso takes aim at the Whitmore/Dugan's, Pat is reminded of painful memories from his past. Mike is forced to confront the guilt he feels for his role in Icicle's death, and Barbara comes face to face with someone from her past. Courtney struggles to hold onto hope after Eclipso targets those around her.
Courtney is left devastated after discovering a dark secret that Pat has kept hidden from her. However, when they learn that Jennie may be able to help in their plan to stop Eclipso, they're forced to put their issues aside as they set out on a road trip to find her. Meanwhile, Beth makes a shocking discovery about The Shade.
After a frightening encounter leaves Courtney's life hanging in the balance, the team band together to determine their next steps.
With the looming threat of Eclipso hanging over them, Courtney seeks help from the unlikeliest of places. Meanwhile, Mike's search to find Thunderbolt leads him straight to his friend Jakeem, and Pat goes to extreme lengths to protect Rick.
As Eclipso unleashes the final part of his master plan, Courtney, Pat and the JSA band together to take him down once and for all.