Season One is the first season of the animated series, W.I.T.C.H., and consists of 26 episodes which aired between December 18, 2004 and August 17, 2005 on Toon Disney. 13 episodes aired on Disney Channel in 2006. This season corresponds to the first story arc of the comics.
For the international versions of W.I.T.C.H., the opening sequence showcased the girls and their powers in a "story version" with unique footage from the opening.
The US version of W.I.T.C.H. used a complete different opening sequence, as well as a completely different theme song. The opening sequence consisted of action clips from some season 1 episodes and scenes from the W.I.T.C.H. demo reel. The theme song is "We Are W.I.T.C.H." and is performed by Marion Raven.
For the first 13 episodes, the demo version of the song was used until episode 14, which introduced a new version of the theme song that would be used for all future episodes.
The season begins with Will, Irma, Taranee, Cornelia and Hay Lin forming a friendship and obtaining their elemental powers thanks to Yan Lin, Hay Lin's grandmother. They then work together to master their powers and fight the forces of Meridian along the way. Halfway through the season, Lord Cedric reveals to Elyon that she is the princess of Meridian and rebels against the girls due to the fact that she would have rather heard this from Cornelia than from someone she barely knew. In Meridian, Prince Phobos uses his glamoring power to make Meridian to seem like a paradise than a world a darkness. In the end, the girls regain Elyon's trust and defeat Prince Phobos to save Meridian from being enveloped in complete darkness.
Will was the only Guardian of the Veil who did not fully develop her own elemental abilities until the second season. Until then, her magical powers derived only from the Heart of Candracar's own great mystical powers.