After a series of tragic events, Mitsuha Yamano miraculously survives a fall off a cliff, only to find herself in a mysterious new world. Saved by a young girl named Colette, Mitsuha soon discovers her extraordinary powers of regeneration and world-hopping. With the ability to move between realms at will, she devises a plan to amass wealth by trading goods between Earth and this fantastical world. Determined to secure her future, Mitsuha sets her sights on accumulating eighty thousand gold coins for a peaceful retirement.