Goblin Slayer is a dark fantasy series centered on the titular character, a silver-ranked adventurer who dedicates his life to hunting goblins. Having suffered personal trauma from a goblin raid that destroyed his village and killed his family, he becomes obsessed with eliminating the creatures. While many adventurers overlook goblins due to their perceived weakness, Goblin Slayer is well-versed in their behaviors, tactics, and dangers, using his knowledge to defeat them with brutal efficiency. Despite his grim demeanor and single-minded focus, Goblin Slayer cares for his companions and is willing to protect them and innocent civilians, earning the nickname "The Frontier's Kindest."

The story explores themes of vengeance, trauma, and camaraderie, as Goblin Slayer's adventures bring him into contact with various characters who assist him in his quest. His small but loyal group of companions, including a young priestess, High Elf Archer, and others, join him in battling goblins and other threats. The series, which spans light novels, manga, and an anime adaptation, is known for its gritty tone, detailed combat strategies, and Goblin Slayer's stoic personality, which contrasts with the brutal nature of his enemies and the dark world he inhabits.