In a small alley in Tokyo, there is an old café that can take visitors to explore time. The magic of the café attracted a woman who wanted to turn back the clock to make up with her lover, a nurse who wanted to read a letter that her sick husband hadn't had time to give her, an older brother who wanted to see her sister one last time, and a mother who wanted to meet a child she might never have known. But there are many rules to keep in mind. One, they must remain seated in a predetermined seat. Two, whatever they do in the time they are visiting will not change the reality of the present. Three, they have to finish the special coffee served before the coffee is cold. The barrage of other regulations did not stop those people from traveling through time. But if their departure doesn't change a single thing today, is it worth it all?