In a sword and magic fantasy world, a merchant with zero combat ability grows in areas other than physical strength. For 15 years, the protagonist, possessing the common talent skill 'Warehouse', served as a pack mule for a party he happened to join. This party grew into the strongest party, led by the hero Ryan, who possessed the strongest talent skills. They eventually defeat the Demon King. The protagonist is then fired. Weak and at the age of 30, he is cast out with only a little capital. He decides to aim to become a great merchant and also find a wife (polygamy is acceptable in this world).