After the world's energy was exhausted, people built a new giant city - Feisi City. Wu Minglu, a middle school student in Feisi City, was judged as a bad person by the city's "system" because he lied too many times, and was attacked by the evil species "karma". Feisi City sent Lian En, a lie monitor, to help Wu Minglu "correct" his bad habits. After the two met, they were drawn into layers of whirlpools, and those unknown secrets were slowly revealed...