Karen, head of the Literature Club, accompanied her childhood friend Himawari, from the Photography Club, to attend the drama club's training camp as a photographer.

At the training camp, twins Asagao and Yuugao asked Himawari to participate with them. After greeting each club member and being shown around the mansion, Karen and the others participate in the rehearsal as photographers.

The next day, a corpse is found in the mansion's greenhouse.

Is this an accident or an incident?