When 13-year-old Eric Parrish comes across glowing mushrooms in the woods behind his house, he's sure there's a scientific explanation. But when they start encroaching on the town - covering the football field and popping up from beneath the floorboards - Eric knows something's seriously wrong.
Not that much else is going right: his parents are fighting, his little brother Brian is a little pill, and he's had a falling-out with his football team - over a pig.
Then a runaway girl from a nearby boarding school warns Eric that the fungus could portend the town's doom and leave it in rubble - just like the village that inexplicably disappeared in the exact same spot over 200 years ago. Eric, Brian, and Mandy set out to solve a very old mystery and save the town of Tanglewood.