The House of the Dragon Season 3 premiere is not easing viewers back into Westeros with a polite conversation and one meaningful stare across a council table. HBO’s schedule lists Episode 1 at 72 minutes, making it the show’s longest premiere and one of the longest battle episodes in the wider Game of Thrones universe.

The episode is set to premiere Sunday, June 21, at 9am ET, and it will depict the Battle of the Gullet. That is the major naval clash involving ships, dragons, and, presumably, a great many people making extremely poor career choices.

Why the Battle of the Gullet matters

The Battle of the Gullet has been positioned as one of Season 3’s biggest set pieces. Showrunner Ryan Condal has described it as something “unlike anything that’s ever been done in television before,” which is a sizable claim in a franchise that has already set people, cities, fleets, and family trees on fire.