What is the climax of Gregor the over-lander curse of the warm bloods?

In "Gregor and the Curse of the Warmbloods," the climax occurs when Gregor and his friends confront the horrific reality of the plague affecting the warmbloods. Gregor's determination to save his sister, Boots, and the other warmbloods leads to a tense showdown with the main antagonist, the Bane. This pivotal moment tests Gregor's courage and commitment, ultimately pushing him to make critical decisions that impact the fate of both his world and the Underland. The emotional weight of the conflict highlights themes of sacrifice and loyalty.