This 20th‑anniversary special remakes and expands the series' origin story. It covers Shinichi and Ran's promise to visit Tropical Land, originally from Episode 1. Adds unseen scenes: their pre‑shrunken daily life, Kyoko's support, Ai/Chiho's lab environment, the APTX‑4869 experiment, and more. Blends in memorable cases/events, like Miyano Akemi's tragedy & Conan's most iconic cases, plus nods to the 4th movie and ZARD songs used as theme.