In a cosy back alley in Tokyo, there is a cafe which has been serving carefully brewed coffee for more than one hundred years. But this coffee shop offers its customers a unique experience: the chance to travel back in time.

Prepare to meet four visitors, each of whom is hoping to make use of the cafe’s time-travelling offer in order to:
- confront the man who left them
- receive a letter from their husband whose memory has been taken by Alzheimer's
- see their sister one last time
- meet the daughter they never got the chance to know.

But the journey into the past does not come without risks: customers must sit in a particular seat. They cannot leave the cafe. And finally, they must return to the present before the coffee gets cold . . .