In the post-apocalyptic wasteland, in the "New Dawn", a broken city-state shrouded in radiation, {Karen Walker} survives among all the forces by cunning tactics. In an accident, he awakened the [Doomsday Detective System] and was forced to launch a suspense mission - to expose hypocrisy and find out the truth. However, the mission always carries moral shackles: saving innocent people will trigger system punishment, and helping bullies can exchange for survival resources. The iron-fisted bully Raymond's territory hides the secret of the source of radiation, green tea intelligence dealer Ella uses a gentle trap to get his clues, and the resourceful city-state consultant Thorn secretly controls everything. Karen is repeatedly struggling between "survival through diplomacy" and "revealing the truth", and every choice affects the survival of the city-state. The mysterious power behind the system and the true source of the doomsday are all hidden in layers of fog. He must use the keenness and changeable methods of a detective to tear holes in the lies in the wasteland, not only to survive, but also to expose all the hidden truths.
