After Dante's old training partner is taken hostage while working undercover in an illegal casino, McCall hires J.J., a former gambling addict, to assist with the mission. Meanwhile, Dee joins a peer counseling group and learns that some students have been bullying her on a social media page.

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.