While Chester catches the attention of the school’s new guidance counselor, 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. Later, 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, while Chester, Riley and Greta sneak into an aquarium to get high. Later, Nathan once again forces Chester to play hero.

On the way to San Francisco, Nathan and Arianna are forced to navigate an awkward truth, Riley and Greta struggle to connect, and Chester’s admission to Sam sends them both spiraling.

Chester recovers from his misfire with Sam, Naomi inadvertently shares a private video with her entire family, and Delilah leans on her friends for help making the most important decision of her life.

Mark's Valentine's Day party for the teens has an unexpected effect on his wife. After untangling their relationship from Nathan, Chester and Bo land in Megan's crosshairs. Riley and Greta work up the courage to level with each other.

Valentine's Day puts love, truth, and friendships to the test as Riley struggles to put out the overwhelming fires around her, Cooper pushes Delilah towards honesty, and Chester and Nathan's relationship comes full circle.