It was a dark and stormy night on Rokkenjima Island. A group of ten friends had gathered at the old mansion for a weekend getaway. Mobin, Ali, Amin, Arian, Anahita, Saber, MohammadMehdi, MohammadHossein, Amir, and Jason were all excited for a weekend filled with laughter and fun. But things took a sinister turn when one of them was found dead. The group had taken a break from playing board games and retired to their respective rooms for the night. The next morning, they found Arian lying in a pool of blood in his room. The door to his room was locked from the inside, and there were no signs of forced entry. The windows were shut tight, and it seemed like no one had entered or exited the room. But the killer had to be one of them. All ten friends were suspects. As the investigation began, tensions rose, and everyone started pointing fingers at each other. Amin, an Iranian nationalist, accused MohammadMehdi, an anti-nationalist, of being the killer. Saber suspected Mobin, his old rival and friend. Anahita blamed Amir, who had been flirting with her. And MohammadHossein accused Jason, who had been acting suspiciously since they arrived on the island. But as the investigation continued, it became clear that things were not as they seemed. Each of the friends had secrets that they were desperate to hide. Amin's nationalist beliefs were just a cover for his illegal activities, while MohammadMehdi was revealed to be a spy for a rival nation. Saber had a grudge against Arian, but it turned out to be a red herring. Anahita had a secret past with Mobin, and MohammadHossein was suffering from a mental illness that made him unpredictable. As the evidence piled up, it became clear that the killer was someone unexpected. In the end, it was revealed that Jason, who had seemed harmless and unassuming, had murdered Arian in a fit of jealousy. Arian had stolen the affections of Jason's ex-girlfriend, and he couldn't handle the rejection. He had snuck into Arian's room, killed him, and then pretended to have no memory of the night before. The group was shocked as the police took Jason away. They couldn't believe that someone they had considered a friend could be capable of murder. The weekend getaway had turned into a nightmare, and they all left the island with heavy hearts and a newfound distrust of each other. Rokkenjima Island would forever be associated with the tragic murder mystery that had unfolded there.