Some months later, Oz returns to Sunnydale, having made progress with his lycanthropy through techniques learned in Tibet. He no longer uncontrollably changes into a werewolf during a full moon, and can now control his transformations, and shows Willow this when he takes her outside and shows her that the moon is full and he has not changed. However, when experiencing the powerful negative emotion of jealousy evoked by the discovery that Tara Maclay has replaced him in Willow's affections, he does change, and is seized by The Initiative and locked in their cells until Buffy, helped by Riley Finn, sets him free.