God's vague instruction to do something that scares her leads Joan to try out for the school diving team, as does Luke, who is determined to impress Grace with an act of bravery. Meanwhile, Helen would like all of her children to proceed with more caution, and Will follows up on a lead in Judith's murder case.

Joan receives heavenly encouragement from God when she auditions for an overly ambitious director's school play about young zombies in love. In other developments, Kevin is leery of Andy's offer to drop the lawsuit; and Luke's bond with Glynis (Mageina Tovah) over science unleashes feelings of jealousy in Grace.