Three monsters escaped from the prison of Hell. Mr. Smith, the sun god, received a mysterious anonymous letter. The letter said that "the door to hell is about to open and darkness will envelope the world." The person who sent the anonymous letter may come from the dark forest. So, in order to find out the truth, Mr. Smith sent one of his handsome angels of light, David No. 98, To the Dark Castle in the dark forest to find out the matter. The owner of the dark forest is named Su Mo. She is a sixty-year-old lonely old woman. She also has a black cat named Debbie and a huge monster named Xiaodao.
Purpose: Human ambitions and desires are getting bigger and bigger. Can the door to hell still be closed?