For the past 200 years, the Summoned Hero Association has trained Heroes on the small world of Terminal to aid other worlds in their times of need. Supporting these Heroes are the Scouts, an auxiliary group tasked with gathering information and resources in these worlds to both aid the Heroes and to help Terminal prosper.

Amon Phantos, a low-ranked Scout and a pariah among the people of Terminal, was content to investigate these worlds as a way to both stay away from the public eye and to use these strange lands to inspire his paintings. But when a trial mission with prospective Hero Elise Vera leads to an encounter with the source of his pariah status, he and his new partner will need to work together to confront the dark pasts and inner demons that could threaten the very worlds they've sworn to protect.