When a supposedly simple reconnaissance mission goes wrong, C-Rank Guide Chung Leehyun finds himself alone in a sort of no-mans-land, with no way to protect himself from the dangerous creatures that roam the area. He's sure he's destined for disaster until he runs into Francis Han, an arrogant S-Rank Esper from an opposing faction, also stranded. The two may be enemies from the safety of their respective bases, but it’s clear that out in the wilderness they need one another if they hope to survive. As they begin to work together, one thing becomes certain: their compatibility level is off the charts! It would be foolish to let a partnership like this go to waste, but can they really overcome the animosity between them?