The magical school of Alfea is all but destroyed, its fractured remnants defended by the brave fairies and specialists who remain - even in the wake of heart-breaking loss. The roommates of the Winx Suite have been hit the hardest. Stella has fallen to the darkness and leads an army against her former friends. Aisha, Musa, Flora and Sky must come up with a plan to push back the shadows that threaten to overrun their world... Meanwhile, Bloom puts everything on the line to redeem herself to those she holds most dear.