The group of friends had planned a weekend getaway at their luxurious mansion on an isolated island. The first day went by smoothly as they drank, played games and caught up on old times. However, as the second day dawned, a typhoon hit the island, leaving them stranded for another forty-eight hours. That evening, as they gathered at the dinner table, a mysterious envelope with the wax seal of a one-winged eagle appeared. The letter, from an unknown witch called Beatrice, claimed she was going to kill them all before the typhoon passed. The group laughed it off as a prank, but soon, events took a dark turn. The first to die was Mobin, found in his locked room with his neck snapped. Ali soon followed, with his body impaled by a giant spear. As the group frantically searched for a way out, they found Amin dead in his room, with a snake bite. The killings continued, with Arian found in the garden, stabbed multiple times, and Anahita drowned in the indoor pool. The group slowly began to turn on each other, with Saber and MohammadMehdi accusing each other of being the killer. As the body count rose, the remaining three, MohammadHossein, Amir, and the accused Saber, barricaded themselves in the living room, only to find that Saber had also been murdered in his sleep. It was then that they noticed that only nine of them were on the island, and it had to be one of them. To make things worse, the victims all died under seemingly impossible circumstances, within locked rooms. As they waited for the rescue team to arrive, the remaining three began to suspect each other. However, before they could take any action, MohammadHossein suddenly collapsed and died from a lethal dose of poison. Amir was left alone, the only one alive. He claimed he was the mysterious witch Beatrice, and that he had killed all his friends to have the mansion to himself. However, with no perfect examination of corpses available, even the victims could be the culprit. And as the last line said, "When the seagulls cried, none were left alive."