Seeking a new purpose in life, Swiss widower Ruedi signs up to work with Depart, an assisted dying organisation. His role is to spend time with those who have sought out Depart's services, acting as a guide and companion in their final weeks.

Margrit, his crotchety first client, wants only to get on with things. Marking time in a care home, with poor health weighing down on her, she has decided it's time to go. Her family are upset by her choice, but she is determined. By the end of the summer, she'll have left the world behind - and on her own terms.

Yet when she and Ruedi realise their paths have crossed once before, an unexpected bond forms. One that will illuminate both their lives.