A teen boy that fell in love with a girl in a dungeon. He starts out weak but as the story progresses he gets stronger. His goal his to catch up to the girl he loves. The story follows the exploits of Bell Cranel, a 14-year-old solo adventurer under the goddess Hestia. As the only member of the Hestia Familia, Bell works hard every day in the dungeon to make ends meet while seeking to improve himself. Bell looks up to Aiz Wallenstein, a famous and powerful swordswoman who once saved his life, and with whom he fell in love. Bell is unaware that several other girls, deities and mortals also develop affections towards him; most notably Hestia herself.