This is the one that stares at a room full of adults and tells them the planet has an expiration date, and watches them argue instead. Tezuka's star system does the heavy lifting: Shunsaku Ban shambling through as the detective nobody takes seriously, Rock hovering on the wrong side of the line, Kenichi and Pichi caught between them, and Dr. Yamadano screaming into a world that has already decided he's a crank. The Fumoon themselves are the gut punch. Tiny, soft, absurdly cute things born out of nuclear testing, quietly loading Earth's animals onto ships because they've done the math and we haven't. It's a single 1980 special, no arcs, no second season, just a compressed hour of Cold War dread wearing a rounded, kid-friendly face. You come for the vintage Tezuka linework and leave thinking about who gets a seat on the ark.
A stellar explosion sends a wave of black gas hurtling toward Earth, and only one scientist knows the truth: Dr. Yamadano has discovered the Fumoon, a superintelligent alien species evolved on a remote island, preparing to evacuate before humanity's extinction. When no one believes his warnings, Yamadano teams up with detective Shinsaku Ban and two young locals, Rock and Kenichi, to uncover the Fumoon's desperate plan. The aliens are methodically collecting animals from across the globe, loading them onto spacecraft for their escape. Mankind, it seems, has been deemed expendable. But Rokoko, a Fumoon who forms an unlikely bond with Kenichi, rebels against this decision. Together with a handful of believers, they race against time to construct a ship that might save at least some humans from oblivion. What begins as a desperate plea transforms into a race for survival, where trust between species becomes humanity's only lifeline. In the shadow of cosmic annihilation, one alien's compassion becomes the difference between extinction and hope.