Shun is a transfer student who can't seem to adjust to his new class and falls into mild depression. However, one day he meets some fellow students by chance in front of a creepy Western-style mansion called the "Jailhouse" which is rumored to be home to a hideous blue monster. Soon, the group of six students, led by Shun and Anna, become trapped inside and desperately attempt to escape before the monster finds them.
入山杏奈
as Anna
須賀健太
as Shun
陳内将
as Takuro
聖也
as Hiroshi
古畑星夏
as Mika
