1986 film by Mai Zetterling

Arvid falls in love with Lydia but puts the budding romance on hold to pursue a career and material wealth. Lydia is willing to wait for Arvid, until her father dies, leaving her finances in a dire state.

Reine is supposed to go to a summer camp called Children's Island but decides to remain in Stockholm over the summer while his mother is working at a hospital. She thinks he is at the camp, and he tells her he is. We then follow him around Stockholm that summer and see what he encounters on the path of life.