Synopsis

Ayumi resolved that during the Detective Boys' camping excursion, she would try to address Ai Haibara by her given name, adding the affectionate suffix "chan." Their trip took an unexpected turn when they encountered four university students who kindly offered them a ride in their campervan to a vantage point overlooking the fireworks display. However, as they descended the mountain, tragedy struck: one of the students, Yasumi Shirafuji, was discovered dead on the road.