While investigating an undersea volcanic eruption by air, Jun and Yuriko witness the splashdown of an unmanned Mars Exploration Probe. Recovered by the Space Development Agency, they find strange images taken with the probe's onboard camera, as well as two golden spheres left inside the capsule. They conclude that the capsule was returned by intelligent beings on Mars, and joke that the spheres are a "gift." After a thief breaks into their safe and steals the spheres, however, he accidentally unleashes Namegon, a monster from beyond Earth.
何者かによって送り返されてきた火星探査用ロケット。その中から発見された金色の小さな球体…。火星怪獣ナメゴンが、人々を恐怖に落とし入れる。
