While Chester catches the attention of the school's new guidance counsellor, Greta learns she can't sneak anything past her aunt; after secrets drive Nathan and his twin, Naomi, apart, he hopes Chester can turn his awful evening around.

The chaos of Club Fair Day is unexpectedly interrupted, forcing the teens to reckon with some difficult truths; just as Naomi decides to take her relationship with Jack to the next level, she makes a startling discovery.

Nathan's guilt over what happened with Naomi manifests in a very public declaration; Chester, Riley, and Greta sneak into an aquarium to get high; Nathan once again forces Chester to play hero.

Chester angles to land himself in Sam's office, only to struggle with the guidance he's given; Megan grapples with the rapidly evolving world; Naomi and Arianna help their friend through her highly unconventional birth.

When school shuts down, Chester, Riley and Greta spend a blissful and intimate day together; with Chester distracted by a chance encounter with Sam, Greta and Riley explore a deeper level of their relationship.

The GSA embarks on the long-awaited trip to San Francisco; Greta and Riley navigate a new awkwardness; Nathan and Naomi turn a fun game into a merciless sibling take-down; Sam moves his questions for Chester offline.