1450... within the walls of the Mac Donald Castle of Clanranald... Surrounded at high tide by the waves of Loch Moidart, the castle Tioram is home to the family of the young Filann, who is finally old enough to learn how to use the sword! But Filann has a problem, because now his clan membership is being called into question. It's decided, he's going to find a way to solve this problem before he's 12 years old, that is to say in a week! To do this, he gets the help of the Mage of the castle, Colum the Great, who knows how to do amazing things. From encounters to discoveries he advances towards his goal... Will he then discover the answers to his questions? And... will he come back unscathed from this journey?