The Dark Door Opens take place immediately after the first Legends book, Eclipse of the Kai. It begins with the young hero, Silent Wolf, who has just changed his name to Lone Wolf, fleeing the desetruction of the Monastery where those of his order had trained for centuries. Lone Wolf is now the last of his order, the Kai, and must make his way to the capital of Sommerlund to warn the king that the Darklords have destroyed the Kai. And so, he makes a treacherous journey on foot and horse, through forest and stream, hills and ancient hallowed grounds before the spires of Holmgard are visible. But he is not alone, another young man, Banedon of the Magician's Guild at Toran has also learnt of the destruction of the Kai and becomea spiritual brother to Lone Wolf. Banedon must return to his guild and convince those present to take action. Meanwhile, the forces of darkness await the two would-be heroes around every corner, plotting their destruction and a fall of Sommerlund. Vonotar the Traitor's treachery and betrayal of his homeland has caused the downfall and almost complete extermination of the Kai, and only Lone Wolf has the abilities to stop him...before it is too late.