Rookie policewoman Mai Kawai is ready to quit the force when the job turns out to not be what she expected, until the arrival of her new instructor Sergeant Fuji causes her to consider sticking around after all.

Kawai continues to learn from her female colleagues what it takes to be a good police officer. The lessons this time involve domestic incidents, and how to deduce what's not immediately obvious.

The chase is the thing! Or so Kawai discovers, when a police dog is brought in to help find a missing old man. Then the chasing continues when the police have traffic control duty during a local marathon.

As the investigation of the high school attack case continues, they need to check the facts from the testimonies of the people involved in the case.