Winx Club: The Secret of the Lost Kingdom is an Italian CGI animated feature film, based on the television series Winx Club, taking place after the events of the first three seasons. The film had premiere on November 30, 2007 in Italian cinemas. Rainbow S.r.l. offered the film to the Cannes Film Festival in 2007. Australian singer Natalie Imbruglia sings the film's theme song, "All the Magic". Elisa Rosselli performed the other songs, including "Fly", "You Are the One", "Enchantix, Shining so Bright", "Only a Girl", and "You Made Me a Woman". The movie was released on DVD in Italy in early March 2008. Straffi has noted that it was difficult to animate the girls' hair correctly in 3D.

This movie picks up after Season 4 leaves off, with the Wizards of the Black Circle / Fairy Hunters defeated and permanently locked away in the Omega Dimension (frozen) by the Winx. They restored magic on Earth, and Gardenia is now (at the time being) no longer under threat from the Earth's Major Fairies' revenge or from the Wizards. While Roxy went to Alfea to study magic, the Winx Club returned to their respected home worlds.

One of four one-hour specials with newly animated scenes and rearranged plot produced by Rainbow S.r.l., covering the first half of the first season. This special mainly features the plots of episodes 1, 2, 7 and 10.

One of four one-hour specials with newly animated scenes and rearranged plot produced by Rainbow S.r.l., covering the middle of the first season. This special mainly features the plots of episodes 9, 13, 14, 15, 17 and 18.

One of four one-hour specials with newly animated scenes and rearranged plot produced by Rainbow S.r.l., covering the end of the first season. This special mainly features the plots of episodes 19, 22, 23, 24, 25 and 26.

One of four one-hour specials with newly animated scenes and rearranged plot produced by Rainbow S.r.l., covering the second season. This special mainly features the plots of episodes 1,2,3,5,8,20,23,24,25,26

The Winx Club are struggling with a terrible mystery that will make your heart beat faster. The archenemies of the Winx Club, the Trix witches, team up with the evil nymph Politea and find out that, to defeat the fairies once and for all and become invincible, it takes very little: a Pearl hidden in the Deep of the Infinite Ocean. As small as powerful, the Pearl of the Depth gives enormous powers to those who possess it. The team of Dark Magic: The Trix, Politea and Tritannus, are almost unbeatable. But none of them have come to terms with the true power of the Winx, the power of Love. Bloom is more determined than ever to get the magic Pearl before her enemies and save prince Sky, captured by the Trix and imprisoned in the Ocean.