Three years ago, Thorgal lost his memory. Kriss of Valnor convinced him that he was her husband Shaigan, a merciless pirate, and they have been terrorising everyone—even the Vikings—ever since. Aaricia and Wolf Cub, exiled when Thorgal was recognised by one of the men from the northern village, have been captured and brought to Shaigan's lair. In the end, it's up to young Jolan to rescue his family with the help of a very special traveller... from the future!