London doesn't sleep; it merely blinks. And in that blink, everything can change. Mark was a struggling illustrator with a deadline and a train to catch. But a single silver shilling lying on the edge of a subway platform changes his world forever. The moment he touches the coin, modern London vanishes, replaced by the Undercity—a sprawling, surreal labyrinth where every forgotten secret, broken promise, and lost memory of the city falls to rest. Guided by the mysterious Curator, Mark discovers a terrifying truth: his talent is no longer just a hobby. In this world, his ink can rewrite reality. But magic comes with a heavy price. With every stroke of his pen, a cold, dark transformation spreads through his veins. His heart is turning to graphite, and his soul is becoming part of the very canvas he is trying to save.