Journalist Sanni visits the countryside to write about the timber industry. Looking for a room she is immediately thrust into the merry community of loggers, always up for a song, but one of them, Hurma-Jussi, is a little too persistent. Luckily, she is “saved” by the handsome lumberjack Eräs.
Tar Steam Princess Armada travels along Lake Saimaa to St. Petersburg and back during the years of Russian rule over Finland. The ship's crew gets tired of their sophisticated coffee maker and replaces her with Roma girl Veera, who has escaped from an arranged marriage. On the way back, mysterious passengers appear on the ship.
The S/S Vellamo heads to Alexandria with Kaarina, the daughter of the ship's owner Hallerman, on board. As Kaarina trades places with the family's housekeeper Marja, first mate Yrjö takes a liking to Marja whom he believes to be miss Hallerman. Meanwhile Kaarina, pretending to be a member of the cleaning staff, starts getting close with lower ranking officer Kalle Aaltonen.
