Callen and Sam travel to the USS Allegiance in the Persian Gulf; the team learn more about ISIS sympathisers targeting military locations.
After an incident involving Wallowski, the Lightman Group is called upon to examine police profiling techniques; Internal Affairs make their presence known too.
When Felix serves as a substitute teacher for a yoga class, his teaching style is met with irritation. Dani and Oscar are trapped in a subway car and Murph asks Teddy if he will be his agent.
Ken is in need of a therapy session with Allison when his patients put him on edge. Molly prepares for her upcoming driving test.
When a police dog finds heroin in a young girl's backpack, Milt and Russ have different theories on where it came from. Jacocks goes to Detroit for a training seminar, and hopes to determine why Milt came to Battle Creek.