This is the story of a teenage girl, Cassie Smith, who, after her death, was recruited into Universal Mercenary Company. Something akin to a ‘Rent A Hero Service’, this mercenary company is one which offers its services to deities, devils, and essentially anyone who can afford their service fee.

To put it simply, they commit the acts which the gods or devils can’t do themselves. Stopping apocalypses, getting rid of universal troublemakers, killing extremely overpowered, non-affiliated of course, demi-gods, etc. Sometimes, they are even tasked with ensuring that a planet doesn't fall apart; naturally, to them though, it is just another job. If the paycheck is big enough, anything is possible.

This story is about how Cassie goes about coming to terms with her new job, serving as a supernatural mercenary for the first time to be exact. With only a few select objectives assigned to her, she was launched into this fantasy like world with 10 years of training, an assistant A.I., a high potential in Shadow Magic, and an itchy trigger finger.

This is the story of this mercenary’s first time in another world.