A group of high school graduates tired of successive lockdowns – decide to organize a ‘party of a lifetime’ at the seaside. Despite alarmingly high concentrations of blue-green algae in the Baltic Sea and cases of strange infections, initially everything goes normally – beach, dancing, sex, drinking, throes of love and disappointments. However, minute by minute the whole thing starts to get out of hand. A zombie outbreak strikes in the middle of the party. The main characters have to fight for their lives.