When a mysterious pulse from a dying star threatens Earth, Dr. Aryan Kael wakes alone aboard the deep-space vessel Astraea to find his crew dead and the fate of humanity in his hands. On Earth, rogue AI war machines enforce control, a billionaire technologist risks everything with a powerful cosmic reactor, and a biotech experiment comes alive in ways no one could predict. As civilizations teeter on the brink, Aryan and his daughter must confront the consequences of ambition, technology, and the unknown forces of the cosmos. After the Last Signal is a thrilling sci-fi adventure that blends space exploration, AI rebellion, and human courage in a race against extinction.