Join 12-year-old science enthusiast Billy Dilley and his quirky friends, Zeke and Marsha, as their summer takes a wild turn when they tumble into a bizarre, underground realm. Together, they navigate wacky creatures and crazy challenges while unraveling Earth's mysteries!
Where to Watch Billy Dilley's Super-Duper Subterranean Summer
1 Season
Cast of Billy Dilley's Super-Duper Subterranean Summer