Adventurer Los was given the unique skill "Schrodinger's cat", but could only 'let the cat out of the bag' and make it disappear. His childhood friend Grail, who had negative feelings towards Los, laughs at his incompetence and expels him from the party.

Los sets off on a disappointing journey, but his life is turned upside down in the process! "Schrodinger's cat" awakens the power to change the laws, and Los' world changes.

Randomly acquired items and higher-level skills that should never have been available can now be selected! Los, unaware of Grail's fall due to his arrogance, uses his new powers to rise to the top with his female magician Misha and his cat, Nyan Koromochi!