After long wanderings, the main character finds a Key that opens a Door to his home world—more precisely, to the “home half” of that world. The knight has fulfilled his duty and can go into retirement...
But when he returns, he realizes that the place he yearned for has stopped being so native and close. Only family ties him to this world; his friends remain “on the other side.”
A new problem appears: he must find that very Magus and deal with a group of killers from the “magic” world who have accidentally passed through the Door. And besides, not everything is calm in the home world either, as it seemed...