Euphoria on-going

Rue returns home from rehab and meets Jules; Nate gets in McKay's head when he takes an interest in Cassie; Nate and Maddy attempt to make each other jealous; Kat is pressured to lose something.

First day of school, Rue's struggles to put the past behind her; Nate becomes obsessed with Maddy's hookup; Kat finds a video of her has surfaced online; McKay takes the stress of college out on Cassie.

Kat tries her first camming session; Jules starts falling for a boy online; Maddy finds something odd on Nate's phone; Cassie and McKay spend the weekend at his school; Rue is confronted about her lies at NA.

Rue tries to get clean for Jules and chaperones Gia at the carnival; Cassie and Maddy decide to do molly together; Kat hangs out with Ethan until she misreads a situation; Nate reveals who he really is.

In the aftermath of the carnival, Maddy and Nate are forced to deal with a police investigation; Jules begins to feel pressured by her role in Rue's sobriety; Cal worries about how his actions have affected his sons.

On Halloween, Rue worries about her reliance on Jules when she starts exhibiting concerning behavior; McKay questions his future in football; Kat continues to push Ethan away; Nate comes up with a plan to get his life back on track.

Rue get depressed and binge-watches 22 episodes of a British reality show; Jules visits an old friend; Cassie looks for advice to help her deal with the fallout of Halloween night.

It's the winter formal at East Highland.

After changing her mind to run away with Jules at the train station and relapsing, Rue celebrates Christmas.