Daniel Robinson, a young geologist, leaves his worksite in the Arizona desert and is never seen again. His co-worker recalls Daniel's odd behavior before he drives off alone and vanishes. Daniel's father David Robinson, private investigator Jeff McGrath, and reporter Briana Whitney grapple with theories ranging from a mental health crisis to foul play in this baffling case. Could an ominous text he sent to a love interest before he disappeared reveal what happened to Daniel?