孤島パズル

Invited by their club's first female member Arima Maria, Egami and Arisu go on holiday on her uncle's solitary island resort. Her grandfather, from whom her uncle inherited the island, loved puzzles and also created one before his death, which lets you find his heritage in the form of diamonds once you solve it. While the students ponder on the meaning of the numerous Moai statues scattered over the whole island, 2 guests are found murdered in a locked room and the 2-way radio, the only way to inform the mainland, has been smashed up...

月光ゲーム Yの悲劇'88

The members from Eito University's Mystery Club decide to go camping during their summer holidays and meet other students with the same idea on their way. Unfortunately the volcano next to the camping area suddenly starts to erupt after 200 years and due to landslides the students become unable to leave the mountain. The tragic situation gets even more ominous when people start to vanish or are found murdered...

人格転移の殺人

A sudden earthquake forces 6 people in a fast food restaurant to take refuge in what seems like a shelter when the restaurant's collapse is nearing. This place however turns out to be a personality switching facility and when they wake up they are situated in an isolated locked up space, with their personalities in swapped bodies, which begin to get murdered soon. Whose personality has murderous intents and what is the motive...?