The protagonist is nineteen year old Emily Diaz, a brilliant, strong-willed and fiercely independent woman who aspires to become a doctor, not for her own benefit, but for the benefit of others. Her dream is to eventually use her skills as a doctor to help those in under-developed countries. Emily is perplexed to find that she is suddenly alone in the world. All animate life has vanished without a trace. The mystery deepens as Emily is transported one hundred twenty years into the future where she is being summoned by a mysterious force on a distant planet. Emily is determined to face this mysterious force and is aided in her quest by two women, Captain Elexa Thomas and Commander Deanna Kara.