Thirteen years later, Tuan works for the World Health Organization in international medical police forces, still faithful to her ideas: the meeting after years with Cian gives the start to an investigation in which she discovers the truths and threats behind the "perfect" world.
Thirteen years later, Tuan works for the World Health Organization as a Helix Inspector, an international medical police detective, but still faithful to her ideals. However, a deterministic meeting with her old friend Cian, leads her down the path of an investigation in which she discovers the truths, threats and ultimate "harmony" behind their so-called "perfect" world.