In the dystopian future of Panem, the nation is deeply embroiled in a full-scale rebellion against the oppressive Capitol. Katniss Everdeen, the symbol of resistance known as the "Mockingjay," has reluctantly embraced her role as the leader and figurehead of the uprising. Having survived two Hunger Games, she now finds herself thrust into the role of a warrior and a propaganda tool for District 13, the main force behind the revolt. As the districts of Panem continue to unite against President Snow's tyranny, Katniss and her closest allies, which include Gale Hawthorne, Finnick Odair, and her fraught relationship with Peeta Mellark—who has been brainwashed by the Capitol—prepare for the ultimate confrontation. The group embarks on a dangerous mission to the heart of the Capitol, facing deadly traps, moral dilemmas, and the complexities of war, all while the stakes for Panem's future escalate.

While the rebels advance, the Capitol retaliates with all its might, leading to relentless perils that test the unity and resolve of the insurgents. Amid this chaos, Katniss's personal vendetta against President Snow propels her forward, often blurring the lines between her public role as the Mockingjay and her internal struggle with the horrors she has witnessed and those she must still confront. Betrayal and sacrifices abound as the grim realities of combat and the political games behind the scenes weave a tapestry that challenges Katniss's conceptions of friendship, loyalty, and love, just as she approaches the threshold of the Capitol, where the ultimate battle will determine the fate of Panem.