Rae Sorano’s life changes when she’s handpicked by the C.I.A. to join the staff of an enigmatic research center. She’s soon rubbing elbows with dozens of alien species living and working below the sands of New Mexico. Within days, she finds herself in the middle of a conflict that will decide the fate of humanity itself. She will be the key to deciding Earth’s place in galactic society, but first, she must decide whom to trust as the world’s newest Assimilation Agent.