Buffy the Vampire Slayer (1997)

S4E11 Doomed

As Buffy seeks to reshape her connection with Riley, she is also faced with the urgent need to thwart a group of demons intent on reopening the Hellmouth. Balancing her personal life and her duty as a Slayer, Buffy must confront both her feelings and the looming threat to Sunnydale. With time running out, she must rally her friends and fight against the dark forces that threaten to unleash chaos once more.