On the first anniversary of Bart Bass' death, Chuck wrestles with the dilemma of following his conscience, or that of his father. Serena runs away with Tripp where they hide out at his cottage. During Tripp and Serena's drive back to New York, an argument between them brings a terrible accident when Serena is seriously injured in a car accident and he flees from the scene. Back in New York, Dan and Vanessa attempt to navigate their newly complicated friendship when Dan seeks a new potential relationship with one of Vanessa's friends. Elsewhere, Eric and Kira make plans to dethrone Jenny. Also, the relationship between Lily and Rufus deteriorates even more when he discovers a letter from Serena's father.