The Orc King is a fantasy novel by American writer R. A. Salvatore, the first book in the Transitions series.
Plot summary
The story begins a century after the events of The Two Swords. Drizzt Do'Urden still wields Twinkle and Icingdeath and he now wields Taulmaril, Cattie-Brie's magical bow. Drizzt defeats a group of bandits calling themselves Casin Cu Calas, a group that wears black and travels through the Orcish Kingdom of Many-Arrows and slays Orcs in their sleep. He is angered when one of them mentions Bruenor Battlehammer's past weakness by allying with the Orcs.
The sixth heir to the throne of Kingdom of Many-Arrows, Obould the Sixth, is visiting the house of a "beautiful" Orcish maiden who is set to marry an elf from the Glimmerwood (formerly Moonwood).
The book then returns to the "past" where Drizzt, with his traveling companion Innovindil, are returning from the journey to the grave of Ellifan. A group of Orcish shaman start conspiring against Obould, and coax forth the Half Ogre-Half Orc Clan Karuck. Innovindil and the rest of her clan are attacked by Clan Karuck, where Innovindil and her Pegasus are slain. Hralien and his friend find her corpse in a tangle below a tree. Another drow, Tos'un and one of the instigators of the Orcish war, has been living in the area alone. Hralien begins hunting for Tos'un, believing him to have masterminded the ambush as it was too well organized to have been orcs. The real mastermind is a powerful Gnomish wizard named Jaculi, that has been trained by Illithids and other powerful creatures, who has been secretly controlling Clan Karuck's different Shaman for centuries.
Back in Mithral Hall Drizzt accompanies Bruenor to a place they believe to be the ancient and lost dwarvern home of Gauntlgrym. With Regis and the dwarves Thibbledorf Pwent, Torgar Hammerstriker, and Cordio Muffinhead they enter, only to discover a cavern full of powerful, otherworldly monsters. Regis and Drizzt silently share doubts about this place being Gauntlgrym, upon seeing the buildings. The buildings look like ones you'd find above ground, and not under. After a vicious battle with two monsters from the Plane of Shadow, they enter into a massive building and find statues of Orcish and Dwarven scholars and tapestries of Orcs and Dwarves living together. A frustrated, dejected Bruenor takes several scrolls and heads home to Mithral Hall.
Cattie-Brie and Wulfgar search for Colson, Wulfgar's surrogate daughter, and with the help of Alustriel, ruler of the city of Silverymoon, finds her in the town of Nesmé. Once she is retrieved, Wulfgar leaves the Companions of the Hall to return her to her original home of Auckney and her birth mother, Meralda, before departing for Icewind Dale and the Tribe of the Elk. Cattie-Brie, saddened by Wulfgar's departure, returns to Mithral Hall with Alustriel.
To avenge Innovindil's death, Hralien goes to find Drizzt in Mithral Hall and asks him to capture Tos'un Armgo. Tos'un also wields Khazid'hea, a sentient sword previously wielded by Catti-brie.
Clan Karuck gathers up several tribes along the River Surbin and races towards dwarven and Silverymoon wizards as they finish construction on a bridge across the river. Several dwarves are slain in the nighttime battle as well as a very powerful wizard. After collecting the dead the next morning, Alustriel, who gave Catti-brie three wizardly items, promises to train Catti-brie in the Arts.
After several days of work, Nanfoodle and Regis finally decipher the text on the scrolls. As it turns out, the language is a mixture of Dwarven and Orcish alphabets. According to the text, Dwarves and Orcs had lived together for centuries, and relations were continuing to improve. After gathering information from Regis, Nanfoodle determines that the only reason the city fell is because something melted the permafrost beneath the city, sucking the entire town and its population under.
Drizzt departs Mithral Hall and eventually captures Tos'un. Bruenor, Regis, Hralien, Torgar Hammerstriker, Thibbledorf Pwent and Cordio Muffinhead track down Drizzt and together with a bound Tos'un they set out to kill King Obould Many-Arrows and end the war.