Pressed for time, Michael tries to enlist the help of his cell mate, who asks for a transfer when he realizes what Michael is planning to do.
Mills questions Bennie about the fire that killed Mills' father; Casey, Severide and Bennie investigate two mysterious diner fires.
The team searches for a missing child in what turns out to be a very complicated case; Burgess and Ruzek are in for a shock when someone from Makayla's past comes forward.
