McCall races to save the team after they're put into extreme danger by her former CIA colleague Michelle Chambers; McCall discovers the truth behind the CIA withdrawal in Venezuela that led to the death of one of her friends.

After a young girl is struck by a car in an illegal street race, McCall tracks down the person responsible for the hit-and-run; Dee contemplates the idea of following in her mother's footsteps to join the armed forces.

After a high-powered real estate developer is killed by a moving subway train, his widow hires McCall to investigate his death. Meanwhile, Aunt Vi and Dee visit an old neighbor living in a nursing home who may need their help.

Dante's old training partner is taken hostage in an illegal casino. McCall hires J.J., a former gambling addict, for the rescue mission. Dee joins a peer group and discovers she's being cyberbullied.

Mel reunites with brother Matthew. McCall helps him expose former unit's wrongdoings. Aunt Vi's efforts to conceal McCall's identity strain her bond with Trish.

When a former Chinese MSS agent is poisoned and comes to McCall for help, McCall tracks down the perpetrators and the antidote. Meanwhile, Aunt Vi encourages Dee to protest against a well-known climate change denier.

Dee asks McCall to help find her transgender friend when the teen goes missing. Meanwhile, Dante is surprised when Big Ben's parole officer approaches him to chaperone his father for an out-of-state trip.

McCall races to help Dante and Big Ben after they are ambushed by a group of attackers and a major family secret is revealed. Aunt Vi tries to remain the reigning queen of a baking contest and Dee suspects a friend may have stolen money.

When a conman from Dante's past attacks a prison transport, McCall and the team race to take him down; Aunt Vi and Dee's girls' trip is suddenly derailed when they find a woman squatting in their home.

The team races against the clock after Mel is kidnapped by a member of her veteran support group and his older brother. Meanwhile, Dante is offered a position with the NYPD's Special Investigation Unit in Los Angeles.