Winx club season 7: Beyone Bloomix:

After the Trix were taken out for the 5th time and saved the world for the 6th time (the Trix didn't appear in season 4) they lived a fairy tail life with the specialists. But then everything changed when Onmensio attacked the Winx and kidnaps Bloom. To save her they have to get very unusual help to get beyone Bloomix, But are the Trix willing to help her? And who is the 4th Trix?