After inheriting the ability to 'skill trade' and a mysterious gateway to another world from his grandfather's dying wish, Mamoru embarks on a journey where he can exchange valuable skills with others. In the foreign town of Valenheim, he encounters Miruka, burdened with the cursed skill 'seeds of disaster' that brings calamity to those around her. By trading her skill, Mamoru liberates her from the curse, earning her devoted loyalty. Mamoru's newfound wealth from selling this dangerous skill catapults him into a venture of escaping his mundane job, navigating skill transactions, and cultivating a path to success.