The action of the second story from the detective trilogy about Ksenia Petrovna Morozova takes place in a cottage on a sea island near the Finnish city of Turku. During the Covid epidemic, one of the Russian scientists who worked in Finland dies. Due to sanitary restrictions, it was decided to hold the funeral for the deceased at the island dacha owned by Ksenia Morozova. The raging storm completely cuts off the inhabitants and guests of the dacha from the rest of the world. Meanwhile, events begin to unfold on the island, forcing Ksenia Petrovna to remember the detective stories of Agatha Christie. One guest is found dead. Is it an accident, suicide or murder? Will this death be the last? Why do relatives who come to the funeral experience not love for each other, but rather hatred? Why do waiters from a catering company behave so strangely?..