When Avery's family moves into an old house, they expect dust, creaky stairs, and a few renovations. What they don't expect is the mysterious mold creeping up from the basement—growing, shifting, almost alive. While the humans hesitate, uncertain of the danger beneath their feet, the house's smallest residents have already seen the threat.

From the cracks in the walls and the spaces beneath the floorboards, an unlikely alliance of creatures prepares for battle. Mice, spiders, crickets, and lizards—once content to stay hidden—must now fight to save the only home they've ever known. As dark tendrils slither up the stairs, they weave webs, strike from the shadows, and even risk fire to push back against the creeping invasion.

But the mold is relentless, and time is running out. The creatures can't hold the house alone. Somehow, they must warn the humans before it's too late—before the basement breathes and swallows them all.

A thrilling, heartwarming mystery filled with tiny heroes, hidden battles, and the unseen protectors of every home.

Approximate length: 20,000 words
Perfect for readers who love adventure, suspense, and stories where the smallest creatures make the biggest difference.