Amir came home glowing with pride, holding his new black belt. He told his dad that the instructor called him the fastest student heâd ever seen. But instead of just celebrating, his fatherâs eyes welled up with tears. “Your grandfather would be so proud of you,” his dad whispered. Amir was shockedâhis grandfather had always been a taboo subject in the family, a man who disappeared mysteriously decades ago. When Amir asked for more details, his father sighed, stood up, and said, “Follow me.” He led Amir to the attic and pulled out an old, dusty training journal belonging to his grandfather. As Amir opened the first page, he realized his grandfather wasnât just a martial artistâhe was involved in a secret underground league that changed their family’s destiny forever, and now, the black belt meant Amir was next in line to face the same danger.