Billy Dilley's Super-Duper Subterranean Summer follows the adventures of Billy Dilley, a 7th grader who loves science, and his lab partners, Zeke and Marsha, who on summer vacation find themselves trapped in a strange world located in the Earth's core.
Complete episode guide for Billy Dilley's Super-Duper Subterranean Summer with detailed information about every season and episode including air dates, summaries, ratings, and streaming availability in Japan.
This episode guide is organized by seasons, making it easy to track your viewing progress or find specific episodes. Use the episode information to plan your binge-watching sessions or catch up on missed episodes.