It revolves around the adventures of the title character as she uses magic to fight evil, while at the same time dealing with problems and difficulties of high school.

The show debuted in Canada on May 4, 2002, on YTV and ten days later in Australia.

Based on the discussions in the series, people whose souls have been around for many lifetimes have magical ability.

It is specifically mentioned in the fifth episode (Weird Sisters) that objects do not have any magical ability.

The most important is a large fluorescent blue gemstone called Merlin's Stone.

It is so powerful that it could allow the bearer to become immortal and break away from the endless cycle of death and rebirth.

Eventually, in Rebellion, it is revealed that Merlin's Stone is actually relatively unimportant; Gwen's Pendant is actually more powerful.

It is casually mentioned in the thirteenth episode that the setting is near Melbourne, Australia.

The show was filmed at St. Hellier's Convent, a 120-year-old building and heritage site in Melbourne, Australia.