Carolina Garcia-Ramirez is a rising star in national politics, taking on the establishment with her progressive agenda. Tough, outspoken, and driven, the young congresswoman has ignited a new conversation in Boston about race, poverty, health care, and the environment. Now facing her second campaign, she finds herself not only fighting a tight primary with an old guard challenger but also contending with numerous death threats coming from hundreds of suspects. When her chief of staff reaches out to Spenser for security, he crosses paths with an extremist group, The Minutemen, with an agenda of white supremacy and toxic masculinity.