Zheng Yi's electronic devices always receive strange messages from "observers", issuing tasks such as [Today's observation task: record target A's microexpression when coffee is spilled (reward: 10 points)]. He's exchanged points for money, health, and even a "transfer of doom." When he became addicted, he discovered that the "Observers" gradually released tasks involving other people's privacy, pain and even danger, and the rewards became more and more attractive. He must decide: should he continue to be a captive "observation terminal", or should he use the rules to reversely observe who the "observer" is?