Overview:

Croquis Pop (Volume 3) : There are dark forces at work that seek to manipulate the young croquer Da-Il for their own ends. When he and his friends are held hostage on the subway in the Dead Zone, Da-Il learns more about the fuel for his croquis from a mysterious croquer with a camera. But not all teachers have benevolent motives...and, as Da-Il discovers, some are downright deadly.