Twenty Year Promise: The Summer Time Forgot

Two decades after graduation, Xu Nian awakens to a haunting memory—a promise made to his best friend Chang Ming, now gone forever. When he reaches out to Liu Xia, their shared past comes flooding back. Together, they uncover a weathered tin box hidden in Chang's childhood attic, holding secrets that will unravel everything they thought they knew about that fateful summer and the friend they lost.