Mason is at the Grill with a friend. The friend is angry and either drunk or turned. He thinks Mason is messing with his girlfriend. He’s not. Mason accidentally kills the guy and that’s what triggered his curse. He warns Tyler to be careful, even a car accident, any death at his hands could change him. Tyler wants to know why Mason wants the moonstone and he won’t give it to him, at least not until he knows why it’s important.
Stefan offers Mason an apology. He asks Mason to call it a truce. Mason says he offered that to Damon, but he turned it down. When Mason won’t agree, Stefan threatens him, reminding him he’s only strong enough to really fight them on a full moon. They shake hands.
After Mason walks away, Damon comes up behind Stefan and tells him he doesn’t want peace with Mason. Stefan thanks him for adding one more problem to their list.
Damon and Mason talk about him talking to Stefan. Mason walks away. Stefan comes up to make sure everything’s good with Damon and Mason
Tyler asks Jeremy how he knows about all this. He says it’s the diaries. Tyler confesses Mason is a werewolf and that he’s not yet. He tells him how to trigger the curse. He shows him the moonrock. Mason takes the sheriff to the cellar and they put the Salvatore’s in there.
Jeremy has his sketchbook in his bag and the girls asks to see it. It’s full of werewolves. Tyler offers to show Jeremy his art. He says it’s on his desk and starts to walk away. When Jeremy looks for it, he comes back and chokes him asking what his pictures are about. He answers truthfully that he knows what he is.
Tyler says it’s a natural stone that’s supposed to have supernatural powers and he won’t give it to Mason because he doesn’t trust him. The girls come back and take the rock. I wonder if Tyler’s actually going to kill one of them. She falls down the stairs and it seems like he does, but she starts laughing.
Tyler tells Mason he almost killed a girl today and for a split second he wanted to. He doesn’t want to be a part of this. He can’t. He won’t. He gives him the moonstone.
Elena told Jeremy about Tyler and Mason. She tells him to stay out of it, he says he will, but will he?
At the Grill, Jeremy tries asking Tyler how he’s doing. From a distance, some girl comments that he’s suddenly cute and Amy tells her to stay away from him. Tyler rejects his effort at first, but then apologizes. The girls come up to them and they plan a double date at Tyler’s house.
After Jeremy leaves, Stefan comes to the house to kiss Elena and have a moment with her before they have to pretend fight in public. She begs him to promise her Katherine won’t actually get her way. They make a deal that when he says, “I can’t do this anymore, Elena,” it means I love you and when she says, “Fine, Stefan, whatever” it means she loves him.
Caroline notices Stefan and Elena exchanging longing looks. Elena says she’s going to go talk to him. Caroline says it’s a bad idea. Damon comes up and asks what’s wrong with Elena. Elena asks Stefan if he still cares about Katherine. He tells her not to turn it into something it’s not and they won’t talk about it while Caroline and Damon are listening. She asks how he can hate Katherine and love her. He says she’s reaching. He’s not Damon. She says not to bring Damon into it. They exchange their secret “I love you’s.” This is not going to end well.
Damon asks about the faux drama. They don’t fight, especially not over him.
Elena sits alone outside by the water. Caroline checks on her. I’m pretty sure Elena is truly upset with the whole situation. Caroline starts to tell Elena the truth, but then notices her mom leaving.
Stefan looks at his bloodstock. Elena catches him. He tells her Katherine took a little vervain every day and built up a tolerance to it. He thinks he can do the same with human blood. She says he can’t. He doesn’t have to. He tells her it’s the only way to beat Katherine. Right now she’s stronger than him. If he drinks the human blood he’ll be stronger. She asks to talk about this later. Stefan gets mad. “He can hear us wherever we are, because he drinks this. This is the only thing that can help me.” Elena asks if he’s serious or pretend, because she can’t tell. “No, this is serious. No more pretend.” She walks away.
Damon checks on Elena. She tells him Caroline is sleeping on the couch. He says he heard and asks what she’s doing. She says she’s going home. “What you did for Caroline’s mom. That’s the Damon who was my friend.” He tells her Stefan didn’t drink the people blood, but he needs to and deep down she knows he it.
She goes to talk to him, asking if he really thinks he can control it. He doesn’t know, but he needs to try. Just a few drops every day. She agrees it’s worth a try, but she doesn’t want him to do it alone. She cuts her hand. “It’s you and me Stefan. Always.” He drinks and turns, but stops. She kisses his vampire face and he turns back. The kiss more passionately.
Mason goes out to a black car that Katherine’s driving. And now we know part of her plan. I had a feeling it had to with werewolves. Mason’s flashback continues and Katherine was there. I guess they had a thing. She must have compelled the friend to jealousy and provocation so Mason would turn. He goes to kiss her. She asks him what the stunt was with Stefan and Damon. She told him to stay away from them. He asks why she cares. She says she doesn’t want him to get distracted. He needs to find the moonstone. So, she’s why he wants it and won’t elaborate further to Tyler.
Caroline and her mother are going to spend their whole day together. She warns her mom she’s in a mood. Apparently, Katherine was there late at night and her mom noticed, assuming it’s Elena. She’s also noticed Caroline has been acting different. They fight.
Caroline complains to Elena about her mother. Then she asks about Stefan. She puts it on that Stefan’s worried if they’re together, Katherine will hurt her and her loved ones.
Elena checks on Caroline and asks if she can take her home. She says she can’t go home. She confesses she’s scared because Katherine will be there. Elena tells her she knows and she’s been so mad at her, but then she put herself in her position trying to understand. She asks who Katherine threatened. Matt. Elena tells her she should be afraid of Katherine. They all should be. Caroline asks what she wants. Elena says that’s the million dollar question.
Mason tells the sheriff Damon and Stefan are vampires. She refuses to believe it because of all the things she’s seen Damon do to help, including walking in the son. He says he’ll prove it.
Damon asks the sheriff about her conversation with Mason. She says she asked him to clean up in the woods. She also tells him about her fight with Caroline
The sheriff watches as Damon tries the lemonade—vercain laced lemonade. He chokes on it and Stefan worries about him. He tells him it’s vervain.
Caroline gets mad at her mom who just got off a call asking her team to bring a weapon.
Damon’s mouth is still burning. Stefan agrees they need to take Mason down. He’s making threats and running his mouth.
Caroline listens for what’s wrong and Elena waits.
Damon and Stefan go to the woods with Mason. They get shot several times, probably with wood bullets and they get ejected with vervain. Caroline hears it and tells Elena.
The sheriff tells Mason she’s going to kill them. Mason knows Caroline is a vampire too. She goes to attack him, but he grabs Elena. She’s fast enough to take him. She kicks him a few times and they run off. Caroline starts asking Damon questions. He begs her to stop. She swears she’ll drag it out painfully. He says they were friends. Caroline listens to them say she’s going to kill both. Elena tries to run down there. Caroline tries to stop her so her mom won’t find out. Elena runs down. Caroline falls at super speed and attacks one of the officers. While another officer tries to shoot at Caroline, he shoots the other officer instead. When her mother sees her, she freaks out. “Hi, Mom,” she says as she unvamps. Damon drinks from one of the dying guards to strengthen himself. He tries to tell Stefan to do the same, but he doesn’t want to. Caroline tries to encourage him too. Caroline begs her mom not to say anything. Her mom doesn’t say anything. She tells her Damon will kill her. She accepts that she’ll be killed. Damon says he won’t kill her because she’s his friend.
Caroline comes to talk to Stefan and Elena about her mom. The plan is to let the vervain drain from her system and then compel her to forget. She wants to forget. It should take about three days. Caroline comes up at the same time her mom asks Damon to keep Caroline away. Caroline listens from outside the door. Damon reminds Liz that Caroline is her daughter. She says not anymore, her daughter is gone. Damon tells her she has no idea how wrong she is about that. He knows she’s there. Caroline runs away and Elena follows.
Mason calls Liz to check on the vampire situation.