In a world where gods grant unique skills upon adulthood, 16-year-old Chrome receives the skill 'Equip Anything'. While a cheat skill, it's useless in guilds, leaving him disheartened. On his way back home, he buys a lottery ticket and wins the grand prize: 1000 gold coins. He uses the money to buy a legendary sword and returns to the guild, aiming for the deepest level of the dungeon with his S-rank weapon.