Description by couchtuner for Buffy The Vampire Slayer Season 4 Episode 19 : Tara and Willow’s relationship seems to be progressing when Oz returns to town. Through his travels Oz has found a combination of charms, potions and meditation that allows him to avoid turning into a werewolf. When Oz discovers that Willow and Tara are more than friends, however, he loses control and the wolf is set free.
Watch It Here :Buffy The Vampire Slayer Season 4 Episode 19 New Moon Rising