Insurance mathematician Henri Koskinen has finally restored order both to his life and to YouMeFun, the adventure park he now owns, when a man from the past appears - and turns everything upside down again. More problems arise when the park's equipment supplier is taken over by a shady trio, with confusing demands. Why won't Toy of Finland Ltd sell the new Moose Chute to Henri when he needs it as the park's main attraction? Meanwhile, Henri's relationship with artist Laura has reached breaking point, and, in order to survive this new chaotic world, he must push every calculation to its limits, before it's too late...