Nigris, an adventurer who has a rare “appraisal” skill and specializes in “healing magic”. He supported the S-rank party behind the scenes, but was deemed incompetent and exiled. Nigris begins his career as a solo adventurer with a fresh start, but his destiny begins to change when he meets the elf slave girl Fels and the thunder master Alisa. "Wha, what is this power...!" Nigris' talent blooms, and they demonstrate incredible power! Together with his trusted companions, Nigris will make a name for himself as an adventurer. Nigris and his friends, who are unrivaled with unstoppable momentum that surpasses even S-rank parties, eventually get involved in a riot that threatens the country!