Buffy the Vampire Slayer
The series premiered on March 10, 1997, on The WB and concluded on May 20, 2003, on UPN. The series narrative follows Buffy Summers (played by Sarah Michelle Gellar), the latest in a line of young women known as "Vampire Slayers", or simply "Slayers". In the story, Slayers or the 'Chosen Ones' are "called" (chosen by fate) to battle against vampires, demons, and other forces of darkness. Being a young woman, Buffy wants to live a normal life, but as the series progresses, she learns to embrace her destiny. Like previous Slayers, Buffy is aided by a Watcher, who guides, teaches, and trains her. Unlike her predecessors, Buffy surrounds herself with a circle of loyal friends who become known as the "Scooby Gang".
UPN
UPN occasionally acquired series cancelled by the other broadcast networks, including former WB series "Buffy the Vampire Slayer" and "Roswell" (both of which moved to UPN in 2001, "Buffy" was picked up after The WB chose not to renew it due to issues with license fees while "Roswell" joined UPN after that same network also cancelled the series), and former ABC series "Clueless" and "The Hughleys". The first program that UPN acquired from another network was "In the House", which moved to the network from NBC (which cancelled the LL Cool J sitcom after its second season) in 1996. In its later years, as part of the network's desire to maintain its own identity with its own unique shows, UPN instituted a policy of "not picking up other networks' scraps", which was a strong argument when fan pressure was generated in 2004 for them to pick up "Angel", the spin-off of "Buffy the Vampire Slayer" which had been dropped from The WB.