Ice and Fire Messenger

Three billion years ago, during the war between Mars's Sui Ren civilization and alien raiders, a batch of Sui Ren "Messenger Silicate Plates" fell deep beneath Earth's Antarctic ice sheet amid the debris from an impact. The anomalous microbial markers and silicate prime fragments in Antarctic ice cores share the same origin as the Martian "Prime Beacons." Beneath the Antarctic ice lies a Mars-Earth relay built by Sui Ren ancestors, one of three nodes in an interplanetary defense network from three billion years ago: the Phobos relay, the Sui Ren core node, and the Antarctic node. Shutting down the Phobos System requires all three locations to act in sync.