In the Fourth Robot Age, the world has nearly eliminated all problems. People no longer work, and even the concept of money has vanished. In this era of overwhelming peace and harmony, the only expectation for individuals is to focus on their own happiness and hobbies.

Kaede is a woman content with her simple life, dedicating her time to herself and her husband, Ren. However, Ren's personality sets him apart from the society they live in. Their tranquil life takes an unexpected turn when a sudden event changes everything.