Church breaks all the rules when he goes after Rocca's attacker and ends up head to head with the new boss of Undercover.
When Bernie is shot down outside his own house and left in hospital in critical condition, Church breaks all the rules when he goes after the gunman. Mac is shocked to find Rocca's replacement is a cop with no undercover experience. Angie and Stone try to stay focussed on a sting involving a dope dealer.