Sune and Sophie are going on a class trip, "the secret journey". It turns out it is the same date as Sune's favourite grandpa is getting remarried. And his grandpa wants Sune to be his best man. When at grandpa's he changes his mind. He has to go back to the classtrip. After this we are on a road trip, Sune is chasing Sophie and the class - and his parents are chasing Sune.
| Actor | Role |
|---|---|
 Elis GerdtSune | Sune |
 Baxter RenmanHåkan | Håkan |
 Tea StjärneAnna | Anna |
 Fredrik HallgrenRudolf | Rudolf |
 Sissela BennKarin | Karin |
 Carina M. JohanssonCissi Skvaller | Cissi Skvaller |
 Maria NohraPolis 1 | Polis 1 |
 Christoffer NordenrotPolis 2 | Polis 2 |
| DDavid Ramirez KnezevicAmbjörn | Ambjörn |
 Jonatan RodriguezMatte | Matte |
 Tomas von BrömssenMorfar Helmer | Morfar Helmer |
 Linus Eklund AdolphsonVäktare | Väktare |
 Marika LindströmInger | Inger |
| EEmil LjungestigNot listed | Not listed |
| VVenus HoumanNot listed | Not listed |
| HHannah Alem-DavidsonNot listed | Not listed |
 Emelie StrömbergNot listed | Not listed |
 Sven BjörklundNot listed | Not listed |
 Louise RymeNot listed | Not listed |
 Lily WahlsteenNot listed | Not listed |
| CCamilla SahlénNot listed | Not listed |