Buffy is sick as a puppy with the flu, but tries to patrol anyway, meeting, fighting and losing to Angelus, before the Gang step in with crosses and kicks to head aplenty. The stress of this causes Buffy to faint, and she is taken to hospital where her flu is diagnosed as serious enough to keep her in hospital for a couple of days. While delirious with the fever, she sees an ugly demon creeping through the hospital after a small boy, who dies the next day. Angelus tries to visit Buffy, but Xander faces him down in a tense confrontation. The flu is very strong, and although Buffy is recovering, these kids are dying. Giles is skeptical of Buffy's account of the demon, and believes it to be the work of the sinister Dr. Backer. He is killed the next day, so Buffy infects herself with the flu virus so she can see the demon, and uses violence to kill it.