As the McKenna family struggles to express their feelings about the loss of Patrick, Uncle Terry, Patrick's twin brother, reappears in their lives. The boys are given The Dangerous Book for Boys, and Wyatt soon finds himself caught up in vivid fantasies inspired by it, and must navigate both a mission to the moon and his family's emotions.

Cast: Gabriel Bateman, Phoebe Amirault, Devin Zamir Coleman, Luis DeJesus, Chris Diamantopoulos, Abigail Friend, Erinn Hayes, Swoosie Kurtz, Luke Matheny, Mark Mingolo, Pablo Diaz Montano, Drew Powell, Scott Seidman, Athan Sporek, Sophia Valinotti