The Drakenhjelm family has lived in the Rautakylä manor for over 150 years. The current master of the house, elderly baron Magnus, has been living for a long time in an unregistered relationship with his housekeeper Lisette, with whom he also has a son, Sebastian. After the baron falls gravely ill Lisette starts getting worried about losing everything, so with Sebastian on her side she demands the baron to write a letter to the pastor and ask him to come over to perform a wedding ceremony. Right after Sebastian has left to fetch the pastor, a threesome seeking shelter from the storm comes to the manor and wreaks havoc on the marriage plans.

Tapahtumat sijoittuvat iäkkään paroni Magnus Drakenhjelmin asuttamaan Rautakylän kartanoon Näsijärven rannalle talvella 1838. Kartanoon saapuvien yllätysvieraiden myötä palataan viidenkymmenen vuoden takaisiin tapahtumiin Kustaa III:n hoviin Tukholmaan.