With House of the Dragon entering its third season, HBO is ready to debut a new spinoff series set in Game of Thrones’ Westeros: A Knight of the Seven Kingdoms, based on George R.R. Martin’s Tales of Dunk and Egg novellas. HBO clearly has a lot of confidence in this series; it’s already been renewed for a second season. And judging by the final trailer, that optimism is warranted.

As we’ve previously reported, A Knight of the Seven Kingdoms adapts the first novella in the series, The Hedge Knight, and is set 50 years after the events of House of the Dragon. Per the official premise:

A century before the events of Game of Thrones, two unlikely heroes wandered Westeros: a young, naïve but courageous knight, Ser Duncan the Tall, and his diminutive squire, Egg. Set in an age when the Targaryen line still holds the Iron Throne and the last dragon has not yet passed from living memory, great destinies, powerful foes, and dangerous exploits all await these improbable and incomparable friends.

Peter Claffey co-stars as Ser Duncan the Tall, aka a hedge knight named “Dunk,” along with Dexter Sol Ansell as Prince Aegon Targaryen, aka “Egg,” a child prince and Dunk’s squire. The main cast also includes Finn Bennett as Egg’s older brother, Prince Aerion “Brightflame” Targaryen; Bertie Carvel as Egg’s uncle, Prince Baelor “Breakspear” Targaryen, heir to the Iron Throne; Tanzyn Crawford as a Dornish puppeteer named Tanselle; Daniel Ings as Ser Lyonel “Laughing Storm” Baratheon, heir to House Baratheon; and Sam Spruell as Prince Maekar Targaryen, Egg’s father.

There’s also an extensive supporting cast. Ross Anderson plays Ser Humfrey Hardyng; Edward Ashley plays Ser Steffon Fossoway; Henry Ashton as Egg’s older brother, Prince Daeron “The Drunken” Targaryen; Youssef Kerkour as a blacksmith named Steely Pate; Daniel Monks as Ser Manfred Dondarrion; Shaun Thomas as Raymun Fossoway; Tom Vaughan-Lawlor as Plummer, a steward; Steve Wall as Lord Leo “Longthorn” Tyrell, Lord of Highgarden; and Danny Webb as Dunk’s mentor, Ser Arlan of Pennytree.