Surprise Party On Earth.Bloom goes to earth to throw a surprise party for Vanessa, her mother's birthday. Valtor then decides to attack the Sun, in order to destroy the Earth and hurt Bloom's family and friends. While the Winx goes to the Sun to stop the attack, But then Valtor sends two dark star giants through the sea to Gardenia, to make sure his mission will succeed. Bloom then calls the Specialists for help, and they arrive at no time. Though, it seems their attacks on the star giants are useless, and they continue to march onto Gardenia, now with new minions by their side, the Star Goyles. Meanwhile, The Lumens of the Sun battle the Staryummies that attack the Sun, but then they transform into three Star Champs, which makes the lumens' battle a bit harder. When it seems the lumens of the Sun are about to win the battle, the Star Champs combine themselves into a new form: Star Troll, a much bigger and much stronger version of the Staryummies, that defeats the Lumens of the Sun in one hit. The Winx then arrive at the Sun and starts battling the monster, but are facing a hard time when the monster eats the entire core of the Sun, which makes it go dark. Valtor then arrives at the scene and kidnaps Bloom into another dimension. There, he shows Bloom the situations on Gardenia and on the Sun, and gives her a difficult choice to make: Give him her Cosmix powers and he will stop his minions, or not give him the powers and let her friends and family perish for good.