De brief voor de Koning
 In the night before his accolade and ascension to knighthood, which is traditionally spent as a nocturnal vigil in a small chapel, 16-year-old squire Tiuri, son of a famous knight in the realm of King Dagonaut, receives a desperate plea for help from a stranger knocking at the chapel door. Unable to refuse a call for help, he breaks the tradition and goes outside, where the stranger, an old man, hands him a sealed letter and begs him to deliver it to a knight clad in black armor and a white shield residing in a nearby forest inn. Tiuri agrees to deliver it, bt upon arriving at the inn, he learns to his dismay that the kight he seeks has in the meantime been challenged by another black knight, this time with a red shield. Tracing the path the knights have taken into the forest, Tiuri finds the knight with the white shield dying, mortally wounded in a cowardly ambush. When the knight learns of Tiuri's possession of the letter, he charges him with delivering it to the neighbouring realm of the west, ruled by the wise King Unauwen, and to seek out a hermit named Menaures living in the mountains separating the two kingdoms, who would show him a secret way through the mountains. Bound by his sense of honor, Tiuri accepts the task and the ring the knight gives him in order to stress the importance of his mission, and remains with the knight until he dies. Soon, however, Tiuri finds himself hunted by riders clad in red, the henchmen of the knight with the red shield, and is forced to flee for his life. In order to speed his progress, he claims the steed of the knight with the white shield, a formidable night-black destrier who accepts him as his new rider. He also finds himself chased by a quartett of knights in grey, who are eager to kill him for unknown reasons, and temporarily loses his horse to a band of robbers, but finds help with the childish but amicable forest-dweller Marius and the monks of a nearby monastery. He eventually makes his way to a castle named Mistrinaut, where he is found and imprisoned for execution by the Grey Knights, who (as it turns out later) were close friends of the knight with the white shield and believe Tiuri to be his murderer. However, Sigirdiwarth Rafox, the lord of Mistrinaut, and his daughter Lavinia supply Tiuri with weapons to save his life, and in the end Tiuri convinces the knights of his innocence and befriends them, especially their leader, Ristridin of the South, a famous wandering knight from Dagonaut's realm.´ From Ristridin, Tiuri finally learns the name of the knight - Edwinem of Foresterra, a famous hero from Unauwen's realm - and of his steed Ardanwen; the stranger who sent Tiuri on his quest turns out to be Edwinem's squire, Vokia. As it is gradually revealed, the murder of Edwinem and the letter Tiuri carries are pivotal elements in a festering conflict between the realm of Unauwen and the realm of Evillan, a kingdom south of Dagonaut's domain. The ruler of Evillan is the younger of Unauwen's twin sons, who is torn by jealousy toward his elder brother and, seeking dominion over his father's realm, has conquered Evillan to support his own ends. Lately, there are rumors about the Lord of Evillan intending to reconcile with his brother; Edwinem was part of the delegation sent to negotiate the peace terms between the two realms. Hoever, the delegation has since gone missing, except for Edwinem, and his disguise as one of the black knights of Evillan indicates that nothing good will be forthcoming from Evillan's side. Under the company of the Grey Knights, Tiuri survives an ambush attempt by the Red Riders and some hire thugs, and safely reaches the base of the mountains, where he parts company with the knights. As he makes his way to Menaures' abode, he is met by a man called Jaro, wo claims to be a pilgrim seeking the hermit's advice, and short while later Tiuri ends up saving Jaro from a fatal fall into a ravine. Tiuri and Jaro later encounter Menaures and Piak, a young mountain boy whose services as a guide is offered by Menaures after he has learned of Tiuri's quest. Shortly after their departure, Jaro reveals himself to be one of the Red Riders sent to kill him, but since Tiuri has saved his life, Jaro finds himself unable to do him any harm. Before he departs, he warns Tiuri of another Red Rider, a vile and cunning individual named Slupor, who will be waiting for him in Unauwen's realm. Piak, who has overheard the conversation, pledges himself to Tiuri and his errand, and in the days that they spend crossing the mountains, the two become fast friends. The two boys arrive safely in the realm of Unauwen, but even there the spies and agents of Evillan are everpresent. In the city of Dangria, the mayor, an agent and sympathizer to Evillan, attempts to imprison the boys under false pretenses, but a diversion by Piak allows Tiuri to hide long enough to memorize the contents of the letter and destroy it. While attempting to free Piak, Tiuri receives help from the disgruntled citizens who have long been displeased with the despotic mayor, although only few ever suspected him being an agent of Evillan. Piak is liberated and the mayor's true allegiance exposed, but not daring to be delayed on their errand, Tiuri and Piak run away before the newly elected provisory town council can question them. Their next obstacle meets them at the Rainbow River in the form of a castle serving as a customs station. Without money to pay the toll, Tiuri and Piak decide to cross the river by stealth, but end up shipwrecked and captured. When Tirui is brought before Sir Ardian, the local Lord of Customs, he attempts to bargain for his and Piak's release by offering Edwinem's ring as a deposit. Upon recognizing the ring, and after learning about Edwinem's demise and that Tiuri carries an important message for the king, Sir Ardian promptly provides the two boys with an escort to the capital. Slupor manages to draw away the Custom guards and awaits Tiuri and Piak at the very gates of the capital, but his last-ditch attempt at Tiuri's life is foiled, and Slupor is arrested. Now able to fulfill their quest, Tiuri and Piak deliver the message the letter contained to King Unauwen. It is later revealed that the letter was a warning about the Lord of Evillan's treacherous plans which formed the core of his reconciliation attempt, since he has planned to murder his brother once the realm of Unauwen was lulled into a sense of peace and security, thereby making him the only claimant to the throne. With a heavy heart, Unauwen calls the knights of his realm to arms to prepare for war and rewards Tiuri and Piak for their valiant service to his kingdom. Soon after, Tiuri and Piak depart for Dagonaut's realm, following the very path they have taken for their outward journey. After arriving at Menaures' abode, Piak, who feels torn between his friendship with Tiuri and his home in the mountains, parts company with Tiuri, who continues his return journey alone. On his way, he meets again with most of his friends and allies, including Ristridin who invites him to his castle in the coming spring once he has completed an errand for King Dagonaut to explore the Wild Wood, a wild and desolate forest area lining the realm's southern border. After an uneventful journey, Tiuri returns to the capital of Dagonaut's realm, where he is welcomed back by the king and his family. To Tiuri's immense surprise, and quite against his expectations to the contrary, he subsequently finds himself made a full knight; even though having broken the rules of tradition, Tiuri has proven that he already is a true knight due to his sense of honor, his dedication and compassion in accepting Edwinem's quest as his own. Tiuri's joy is completed when the very next day Piak arrives at the capital, having changed his mind and decided to join Tiuri as his friend and squire. The story is continued in Geheimen van het Wilde Woud (Secret of the Wild Wood).