In the center of the plot – the authoritative summer head of the family – Sofia. Grandmother on the verge of death. She is consumed by guilt for driving away a girl who got pregnant from her son 28 years ago. Sophia's last wish is to find her lost grandson and take care of him. Marina – a devoted and beloved granddaughter – swears to fulfill her grandmother's last wish. The girl is completely devoted to the search for her cousin, but they never become successful.

Grandma is getting worse every day, so Marina, in despair that she can't fulfill her last will, dares to take an unusual step for herself... A pious and highly moral girl remembers a fatal accident – meeting a gambler and cheerful Sasha. Together, they embark on a large-scale adventure involving the whole family…