Faced with the prospect of life in a group home, Ryan decides to run away from Newport, and Jimmy discusses finances with Kirsten.
When Ryan is arrested for the fire, Sandy helps him.
Back at school, Ryan doesn't feel like he fits in and Marissa chooses her man.
Having dated seriously for a week, Marissa and Ryan are progressing slowly. Summer tries to deny her true feelings for Seth, while the case against Kirsten's father Caleb continues to cause friction between Sandy and Kirsten.
Seth tries to choose between dating Summer or Anna, and Ryan visits his brother in prison.