Howl's Flying Castle: The Amulet of Draconialis

Sophie is learning to live with the twists & turns of being the love interest of Howl, but when a purple letter comes to their Castle, & Calcifer's warnings aren't enough to prevent her & Markl from opening it, a dark part of Howl's past comes flying into the picture. Suddenly an old acquaintance with a grudge remerges, and this time Howl's got something to loose. *via movie*