The children of Seacrow Island take a public ferry to visit a relative only to find that she has went to hospital. When they try to row back home they lose the oars and must take refuge on a desolate island. 4-year-old Skrallan is the first to discover that two colorful smugglers are hiding on the island.
Tjorven and the other children at Seacrow island have received a play day in a gift. Uncle Melker will find himself ending up in the lake several times. The kids also have found an old ship that will be named Albertina. They divide themselves into two pirate gangs and fights about the wishing stone Mysak.
