Stefan struggles to maintain control of his new circumstances, and Elena and Jeremy's uncle, John Gilbert, unexpectedly shows up in Mystic Falls. Stefan exhibits some unusual behavior at the Founder's Day event, and things turn ugly when Damon tries to find out why John Gilbert has returned. Matt and Tyler find themselves in conflict after an incident at the party, and the relationship between Matt and his mom reaches a new low point. Meanwhile, Elena is unable to comfort Jeremy, causing him to take action.