A senior politico needs a liver transplant: too many 3-martini lunches on the taxpayer's dime, hey? We're gonna hold that liver to ransom. Hack this antenna to access the ambulance comms.
The G-Kings have taken to hijacking organs on their way to and from hospitals, for sale on the black market. Protect this antenna from their hackers, or they'll be able to tap into ambulance radio chatter.
We found an ambulance near you. Head there and steal the ambulance. They won't hand over the liver unless you look the part - with the right wheels, they won't look twice, G.
An ambulance has been misdirected into G-King territory and is now at risk. Defend this ambulance and ensure that it isn't stolen for use in their organ-trafficking racket.
The donor liver was recovered from a morgue. Head over there with the ambulance and make the pick-up. Takes forever to find a match - this'll keep this politician in debt to the G-Kings.
With that ambulance stolen, looks like the G-Kings are on their way to meet a black market contact. Stop the ambulance; don't let it reach the drop-off.
All right - deliver the liver and bring the ambulance back to our drop-off. We've already made the call - we get that politician his liver, and we get a friend to the Benjamins in government.
Damn, it looks like the Gs got those organs - and with this city's E.R.s full of gunshot victims in need of transplants, they'll clean up! Intercept the ambulance and organs before they reach the drop-off.
There's a bag full of cash nearby - call it a goodwill gesture from our new political buddy. Grab the bag and keep it away from anyone makes a play for it.
Nearby is what must be the payment for the G-Kings' trouble. Recover the bag of cash and keep it away from them. Maybe they'll realize there are easier ways to earn money.