There were a total of three theatres in the April 1st supernatural events book. They were: "April 1st: Demon Island"(Bridge A to the Stars), which told the story of the protagonist and his companions 'adventure to Demon Island on April 1st;"April 1st: The Sealed Door"(Supernatural Biography), which told the horror story of the protagonist and his companions being trapped inside the sealed door on April 1st; and "April 1st: The White Tower"(Mystery Tribulations), which told the mystery story of the protagonist and his companions going deep into the white tower to find the truth on April 1st.