The series stars Kaitlin Olson as Morgan Gillory, a single mother of three who works as a cleaner at the Los Angeles Police Department. Morgan has an IQ of 160, classifying her as a high-potential intellectual (HPI) She is recruited as a civilian consultant for the LAPD's Major Crimes Division. She is partnered with Detective Adam Karadec, a disciplined and methodical investigator whose by-the-book approach clashes with Morgan's intuitive and unconventional methods. A subplot follows Morgan's use of LAPD resources to investigate the disappearance of Roman, the father of her daughter Ava.