In the wasteland world after the nuclear war, smartphones left over from the old era have become the most in-demand resource. Su Mo, a scavenger struggling to make ends meet, unexpectedly discovered that his old mobile phone could be turned on, and it still retained a complete mobile network signal. While others were still fighting for half of the expired cans, he had used the map on his mobile phone to find the pre-war warehouse, used payment software to exchange for clean water, and even used social software to contact other survivor strongholds. But the phone's battery power was only 3%, and the entire wasteland had not had stable power for thirty years. From a scavenger picking up garbage to a giant controlling core resources, Su Mo's counterattack in the wasteland started by finding a power bank for his old mobile phone.