When a series of gates open connecting various timelines, it signals the arrival of some pretty impressive monsters upon whom human weaponry is useless. The salvation of mankind is going to rest with a generation of hunters. These are rated S-E, with E being the most junior in terms of experience and skill. That's how we meet the young "Sung Jinwoo". He's a relative novice who is also broke. He can't even pay the rent, so accepts a task joining a team who are entering a dungeon that's only been deemed safe for "C" level hunters. Pretty swiftly he realises that he's being manipulated by his…