Willow is watching werewolf Oz, but Xander comes to relieve watch since she needs to study. She gives him a tranquilizer gun to protect himself.

Faith and Buffy patrol at night; they talk about Scott. Meanwhile, a man is being hunted by a demon in the woods.

Buffy, Willow and Xander hang out with Scott and his friends, Debbie and Pete. Buffy tells them that she needs to visit the guidance counselor, Mr. Platt.

Giles and Xander panic that Oz may have gotten out and killed someone. Xander had fallen asleep during his shift and the window was open.

Buffy visits Mr. Platt and he impresses her with his direct attitude. She opens up to him about Angel.

The Scoobies worry about Oz's situation. The group looks into the possibility that the victim may or may not have been killed by him. Oz locks himself in the library cage and asks Willow to leave him alone.

Buffy finds a feral Angel in the woods.

Cordelia, Xander and Willow break into the morgue to investigate the body. Willow faints after taking hairs from the dead body.

Buffy brings Angel back to his old hideout. She chains him to a wall to keep him housed and everyone protected. She goes back to the library to relieve Faith and take over watching Oz duties.

Oz didn't break from his cage. Giles finds Buffy reading books about Acathla and the curse. Buffy asks him questions about the hell dimension Angel was sent to and if there was a chance he could return.

The test results for the hair were inconclusive.

Buffy is having a rough. She leaves Scott at lunch and Pete makes a joke about her.

Buffy visits a wounded Angel, but he still acts feral toward her when she touches him.

Buffy finds Mr. Platt dead. He has been mauled and attacked.

Pete and Debbie are making out in the storage room. He gets mad at her when he sees that she tried to empty his glowing green liquid. His face contorts into a demon when he gets really angry; he blames her for all the trouble in his life and he hits her. He reverts back to normal and begs for forgiveness.

The death of Mr. Platt clears Oz of the crime. Oz sees Debbie's black eye and worries about her;  Pete watches them from a distance.

Willow and Buffy check on Debbie in the bathroom; she's applying makeup to the eye. She spills that Pete was the one turning into a monster and killing people. Buffy gets mad when Debbie says she won't turn Pete in.

Angel frees himself from the chains.

Pete visits Oz at the library cage and gets mad. He frees him and the two fight; Oz turns into the werewolf and the two fight again.

Buffy accidentally shoots Giles with a tranquilizer when Debbie pushes her from shooting Pete and Oz. The pair escape the library and everyone runs after them.

Debbie runs into the storage room to find Pete. He gets mad at her for chatting with the Scoobies about him beating her. He kills her.

Faith shoots werewolf Oz with the tranquilizer gun.

Buffy and Pete fight in the room. Angel appears and fights Pete; he kills Pete.

The group finds out that Pete created a "Dr. Jekyll and Mr. Hyde" type of potion where it would change his personality. He thought that Debbie was going to leave him. After a while, he didn't need the science potion to transform himself.

Buffy comforts Scott because both Debbie and Pete were close friends of his.

At night, she watches over a tired Angel.