Deadly toxins can be hidden inside the most beautiful flowers. That's what Astra Meador's famous biophysicist mother taught her. As her mother's apprentice, Astra has developed skills in botany, chemistry, medicine, and, most importantly, in keeping secrets. In fact keeping Astra's secret was the reason her family decided to leave the Earth and join a terraforming mission to colonize a distant planet called Crillain IV. But when Astra wakes early from hypersleep, she discovers that her mother never made it onboard, her father died in transit and his body has been ejected from the ship, and she suspects that she's not the only one awake. When the ship finally lands and she's reunited with her brother, Nash, Astra hopes to settle into a new life, especially when she meets the charming young engineer, Jax, and is recruited by the mission commander to train alongside his handsome son to be a future leader of the small colony. Then Astra learns that she's not the only one with a dark secret.