Stray Kids: Changbin's workout gym-A Walk Into the Unknown

After two months of recovery from an injury, Changbin is eager to hit the gym and get back to his training routine. Despite warnings from his friends, Felix and Hyunjin, he decides to push through. What should've been a simple workout day turns into a strange and unsettling experience when a seemingly innocent encounter with a child on the street leads Changbin down a path of bizarre occurrences, eerie twists, and an unexpected danger lurking in the familiar.