Overview
Väinö Kehkonen, the head of a Helsinki-based construction company, takes his wife and the Ärmälä couple to Dr. Puosu for a rejuvenating hormone injection, which causes them to behave like children. The director, previously known for his lack of drive, gains energy and enthusiasm from the injection, both in his business and personal life.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 51 | December 3, 1981 (84) | |
 | 31 | May 16, 1973 (56) | |
 | 42 | August 9, 1962 (56) | |
 | 29 | July 20, 2005 (86) | |
 | 46 | May 18, 1973 (71) | |
 | 21 | April 5, 2019 (92) | |
 | 56 | December 19, 1970 (78) | |
| 31 | October 10, 1989 (72) | |
 | 57 | May 9, 1973 (81) | |
| 23 | October 7, 2019 (94) |