Courtney Whitmore moves to Nebraska with her family and discovers her stepfather, Pat Dugan is hiding a major secret.

As the Injustice Society of America come closer to accomplishing their mission, Courtney and the JSA face off against Icicle and the villains of the ISA.

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.

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.

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.