Life on Seacrow Island

The Melkersson family arrive on the island where they have rented a house for the summer, only to find out that it's not as wonderful and idyllic as they had pictured.

Teddy and Freddy take their new friends Niklas and Johan on a trip to one of the rocky islets in the outskirt of the archipelago. They also take Båtsman with them, which makes their little sister Tjorven angry, because it's her dog. When Tjorven's parents don't recognize her complaints, she decides to leave the family and become a housekeeper to Söderman. Johan moors the boat too loosely at the rocky islet and when the four young friends are eating fish by a fire, the boat drifts away. Their boat is saved by the girls teacher Björn, who happens to be in his boat in...

The fog is coming in from the sea at the outskirt of the archipelago. When Johan, Niklas, Teddy, Freddy and Båtsman leaves the rocky islet out there, they get lost with their boat in the fog. Back home on Saltkråkan people hear about the fog in the weather report. Melker is alarmed. Nisse tries to calm him down, by pointing out that the sea is anyhow dead calm. The four young friends and the dog finally arrive at an island. They rove about until they find out it's the island where the school is.

On midsummer, Malin is courted by Christer but the children do their best to stop him.

In a book Melker finds the maxim "This day - a life". He decides to make the maxim come true this very day, but despite his good intentions, all his undertakings end in disaster. He builds a water-conduit to the kitchen, only to find out that the whole kitchen-floor is flooded with water. He cook fishes for the dinner, but the food is uneatable because of too much salt. Christer invites Malin to a boating excursion and is not happy when she brings along her little brother Pelle. In the end Christer leaves Saltkråkan with the intention of never coming back.

Söderman urges Nisse Grankvist to report to the police that some thieves are stealing fishing-nets from the fishermen. Johan, Niklas, Teddy and Freddy go on a boat-trip to Kattskär, an island far out in the outskirt of the archipelago, where they are going to stay overnight in a cottage. The island is uninhabited, but there are some cottages, which are used occasionally by fishermen. The four young friends think they are alone on the island. They don't know that the thieves, Berra and Elis, are using the island as their hiding-place.