It has been 73 years since the battle of the brave Gladers against the BREACH.
Descendants of Thomas, Minho, and other heroes of the Maze live on the islands, engaging in farming, raising sheep, fishing, and working in the forge.
But one day, a ship arrives from the outside world, which remains only as terrifying legends in memory.
On the deck lie scattered corpses, and the only surviving crew member appeals to the islanders for help.
Several teenagers, whose veins carry the blood of the Glader ancestors, will embark on a journey.
If only they knew who and what they would have to face…