The Big Four: Rise Against Pitch

The Big Four yet again has to defeat the likes of Pitch, but there's a catch. Hiccup has no memory of Merida, and only she, Rapunzel, and Jack know why. Pitch wants war and The Big Four gone, and he can only do so if Merida keeps her end of the deal, to keep her memory of her and Hiccup out of Hiccup's mind. Jackunzel x Mericcup.