Damon has been feeling guilty for his thoughts of wanting Elena. He thought if he is going to feel guilty about something, that he should actually kiss her. He gos in for the kiss and Elena is responsive. She is coming to terms with the fact that is it not her responsibility to fix Stefan.
Klaus continues his quest to get his family's coffins back from Stefan and he uses Elena to make this happen. He compels Jeremy to walk out into the street, and Alaric pushes him out of the way just as a car is about to hit him. Alaric suffers a pretty big blow. Klaus' attempts at using Elena are not effective now that Elena doesn't feel the same way for Stefan.
Elena wants a normal life for Jeremy so she asks Damon to compel him to forget everything. He compels Jeremy to leave Mystic Falls and never come back. At the end of the episode, we find out that one of the coffins won't open. Bonnie thinks it is closed with a spell and whatever is in it is going to make Klaus suffer.