After orphan Teru Kurebayashi loses her beloved older brother, she finds solace in the messages she exchanges with DAISY, an enigmatic figure who can only be reached through the cell phone her brother left her. Meanwhile, mysterious Tasuku Kurosaki always seems to be around whenever Teru needs help... Could DAISY be a lot closer than Teru thinks?

Teru and Kurosaki continue to investigate the fake DAISY incident and are on the verge of solving the case when Teru gets kidnapped! What does the kidnapper want with her, and will Kurosaki be able to rescue her in time?!