In the show's first season, the Halliwell sisters discover that they are descendents of an ancient Wiccan prophecy--the "Charmed Ones"--after moving into their dead grandmother's old home. As the sisters begin to understand their magical roots, their powers are constantly under attack from all fronts, including warlocks, mortals and even their own long lost father. Warlocks Rex and Hannah are two adversaries in particular who are out to destroy the sisters. Prue also finds love with old high school flame Andy, who finds out about her secret powers. Shortly after, the sisters come up against a demon named Rodriguez, an Internal Affairs officer at SFPD who learns of their powers after eavesdropping on one of Andy's conversations. In the season finale, after repeated, unsuccessful attempts at trying to get to the "Charmed Ones," Rodriguez is aided by time sorcerer Tempus Fugit, who traps the Halliwells in a time loop.