Roddy’s whiskers trembled. "Flushed Away 4-10," he whispered. "Not a date of danger. A date of founding."

Rita squeezed his paw. "They didn’t wash you away, Roddy. They sent you to find your own beginning."

At last, they found it: a massive rubber plunger, worn smooth, with "4·10" carved into its handle. Behind it, a small metal door—unlike any pipe they’d ever seen.

"Still thinking about it?" she asked.

To the rat who finds this— You were not a mistake. You were not trash. The world above calls us pests, but down here, you are history. On April 10th, four years before the Great Flush, the first colony chose survival over surrender. This chamber is proof: someone down here always remembers. —The First Custodian

Rita’s ears perked. "No one’s mentioned that chamber in years. The old legends say it’s where the first Flushed—the original sewer rats—stored something dangerous."

The end.

In a sprawling underground city called Drainstead—where leaky pipes hissed like wind and lost treasures from above rained down every Tuesday—lived Roddy St. James, a pampered pet rat who had once been flushed away, fought a toad tyrant, and found true love with a resourceful rat named Rita.

The letter read:

He pulled out a scrap of wax paper where he’d scribbled coordinates. "I didn’t tell you everything, Rita. Before I landed in your boat that night, I passed through a place. A forgotten sump chamber, sealed by an ancient plunger—marked with the numbers 4 and 10 in rust."

Inside was a tiny, dry chamber. No slime. No bubbles. In the center stood a glass dome. Under it, preserved in still air, lay a single object: a handwritten letter.

That evening, they set off through the tunnels. Past the Jammy Dodger factory. Past the tidal wave zone where the toilet bowls flushed in sync every hour. Deeper than the Toad’s old lair.