Carter and Amelia receive a mysterious signal by chance, and embark on a challenging journey of discovery. In their search for the signal, they encounter various difficulties, including technical problems, scepticism from the outside world and obstruction from a mysterious organisation. They keep searching for clues and go through various difficult environments, such as abandoned factories, dangerous canyons and mysterious caves. In the process, they gain a deep understanding of the complexity of human nature. Team members react differently when faced with danger, some are brave and fearless, while others are cowardly and selfish. In the end, they discover a huge glowing sphere and are transported to a mysterious alien world...