First installation of DPSN Series. A test subject wakes up in a strange underground facility that hosts dumbfounding secrets. Oxford, who has been working for more than a decade, tries to assist his new assigned test subject that, for the first time in his life, has caught his attention. However, it isn't just him who is interested, because the more they discover about the test subject, the more the test subject finds the real reason to why he ended up in the facility in the first place.