The Locked Apartment. Some doors are locked for a reason. Set against the high-pressure backdrop of final examinations at a school for ordinary children, the air is thick with academic tension and the exhaustion of endless math equations. Alden Rowe is struggling to maintain his focus, while his "deeply unserious" friend Caser Callen—a master of looking busy while sketching caricatures—provides a welcome distraction from the stress of the papers. But Alden’s attention is soon pulled away from his studies by a residential flat across the road that remains unnervingly still while the world moves around it. When a small cardboard parcel is delivered to its doorstep and remains untouched for over twenty-four hours, curiosity turns into a quiet mission. What starts as a simple investigation into a mysterious package leads Alden and Caser into the silent halls of the building. As they stand before the door, the silence is broken by the unmistakable sound of a turning lock. The door is opening, and some secrets are about to be unlocked.