Lou and Esther are the best of friends. They do absolutely everything together, speak their own language through inside jokes and code words, and share a dreamy curiosity about what their lives would be like had they grown up with a sister. When Lou’s father unexpectedly passes away, she discovers that she has a very real, and very chic, long-lost half-sister, Priya. As Lou begins to explore her relationship with Priya, her and Esther’s codependent bliss is rudely interrupted, creating a rift between them. As the rift threatens to grow beyond repair, Lou must learn to redefine what family is, or risk losing Esther for good.

Sparks fly in all directions as marketing maven Kelly Jones, brought in to fix NASA's public image, wreaks havoc on Apollo 11 launch director Cole Davis' already difficult task of putting a man on the moon. When the White House deems the mission too important to fail, Jones is directed to stage a fake moon landing as backup, and the countdown truly begins.