An indiscretion with her employer's son leads to governess Dorothy Mooreland's dismissal without a reference. With the loss of any chance of earning a livelihood, she faces a desolate future, until a miracle job offer from a mysterious foundation sees her embarking on a journey to the edge of the galaxy — the Margin Worlds.

Colonial Marine Soren Boyce is at the end of his career. Fortuitously, he is given a lifeline — a final assignment. Protect Dorothy Mooreland at all costs. Nothing in his orders includes falling in love with his charge.

Why do free will and common sense always go out the window when love crashes through the door?