The Seven Knights Agency is an agency that is responsible for sending in a task force to study and push back the sudden uprising of demonic forces from the deepest circles of hell. Alex Monsume, a 19 year old who has been sent to work for the agency, finds out that he has been assigned to the rarest and most powerful of the agency's task forces: Forestica Terra, nicknamed the Fairy Tale team. Armed with only a robotic arm, a mask and a homicidal drive towards the inhabitants of hell, he and his team pave the path to humanity's salvation while having a little bit of fun every once and a while.