Stories are vanishing worldwide, and with them, the spark of imagination. The siblings join other young Readers to journey through fading worlds—crumbling cities and forgotten kingdoms—to recover lost tales before they're gone forever. But a traitor's betrayal reveals the true scale of the enemy's plan to control truth itself.

With one sibling trapped and the library on the brink of collapse, the fight to save stories becomes a battle for their own memories and identities. As worlds dissolve and hope dwindles, they must choose between saving a friend or preserving the stories that shape the world, knowing failure could mean the end of imagination.