Sigmund Corp. employees Dr. Eva Rosalene and Dr. Neil Watts are again tasked for fulfilling the lifelong dream of the dying man called Colin Reeds. The doctors insert themselves into an interactive compilation of his memories and traverse backwards through his life via mementos to fulfill a wish that seems rather paradoxical: to change something, yet change nothing at all.

While traversing through his memories Dr. Rosalene and Dr. Watts find that although at first they traveled backwards in time normally, soon they started to hop back and forth between old age and new age. Dr. Rosalene theorizes that this leap between memories actually follows the pattern of a decaying orbit around a "gravitational center" at about the middle of his life.