Brett and Foster question the suspicious circumstances surrounding an attack at a juvenile detention center. A convoluted new technology at Firehouse 51 tests everybody's patience. Kidd is chosen to represent the district at a leadership conference.
The guys are in the final preparation stage for an unknown scheme when Dee enters to inform them that it is "Dee Day," and they have to do everything she wants without complaint.
Phil, Claire, Alex and Luke love having the twins around, but taking care of them is exhausting! However, when they realize the babies might help them with a few things on their to-do lists, they offer to give Haley the day off.