lost

after about two days the teens have found only the remains of toothless' fin (the red fabric) and hiccup's saddle bag, but where's Hiccup and toothless? Hiccup awakes to have no memories whatsoever can he find toothless and hope that they can get home before it's to late? (rated T just in case) (will know contain flashbacks from HTTYD 2 nothing to big)