Detective Holloway testifies in court as part of an undercover operation, leaving Severide to watch her young son; a fire at an art gallery with a victim trapped inside leads Cruz to make a rash decision.
Abruzzi's demotion puts the entire escape-plan at risk; if Michael protects the new inmate, T-Bag threatens to expose the plan to the guards.
Gary searches for a way to save his parents' nest egg after his mother invests their retirement money with a con artist.