Three boys "borrow" a sailboat and sail away for a summer adventure on Lake Mälaren.
| Actor | Role |
|---|---|
 Elof AhrleNot listed | Not listed |
 Gunnar BjörnstrandNot listed | Not listed |
 Tomas BolmeNot listed | Not listed |
 Christian BrattNot listed | Not listed |
 Siegfried FischerNot listed | Not listed |
 Sven-Eric GambleNot listed | Not listed |
 Åke GrönbergNot listed | Not listed |
 Jan MalmsjöNot listed | Not listed |
 Monica NielsenNot listed | Not listed |
 Gunnar OlssonNot listed | Not listed |
 Hans StrååtNot listed | Not listed |
 Sif RuudNot listed | Not listed |
 Ilse-Nore TrommNot listed | Not listed |
| MMarianne KarlbeckNot listed | Not listed |
| CCarl-Åke ErikssonNot listed | Not listed |
| CChristina LundquistNot listed | Not listed |
 Svenerik PerzonNot listed | Not listed |