S8·E16 The Sparx Festival

Faragonda and Griffin announce the beginning of the Sparks Festival at Alfea. While preparing a new concert for the festival, The Winx are alerted by the Star Case that a prime star is nearby. They go down into the Alfea well, where they find a Star Screen - a portal to a Prime MiniWorld, where they go through several levels of the quest of the first prime star, and the Trix follow them there as well. Eventually the Winx manage to capture the first Prime Star, and goes back to Alfea to hold their concert, while the Trix go back to Valtor, who's angry at them.