Kid in a Fridge

Kid in a Fridge is a side quest in Fallout 4.

Detailed walkthrough

 * Investigate the voice - You'll hear a child calling from a refrigerator near a ruined house south of University Point, east of Jamaica Plain. Upon shooting the handle off the refrigerator a child ghoul by the name of Billy will step out.
 * Talk to Billy - He will inform the player that he had fled to the fridge when the Great War started and that he had been trapped in the fridge for two hundred years. He tells the player that he wants to find his family and return to his home in Quincy.
 * Escort Billy to his house or sell him - You can either choose to help him get there or sell him to a member of the Gunners named Bullet for caps. Billy's house is not far, but the fastest way there requires going straight through Quincy, where you will have to fight most if not all the Gunners of the city.
 * Ending - If you choose to help him get to the house you will find his parents survived the war and are happy to see him. Bullet and some other Gunners will arrive shortly thereafter and demand Billy and his parents step outside.
 * If you choose to fight Bullet, Billy's father will give you 250 caps for saving them.
 * If you chose to lie to Bullet and say the house is empty (very hard speech check), Bullet & gang will leave you and the Peabody's alone. Billy's father will give you 250 caps for saving them.

Or

After talking to Billy you will encounter a Gunner named Bullet on the road to Quincy that wants to buy him. Pass his charisma checks for a total of 350 caps, to get the charisma checks you may need to ask him how much Billy would be worth. Let Bullet walk away a little after you get the caps then kill him. When you get the caps from Bullet the quest will technically end, but if you kill him you can talk to Billy again, and then take him to his house for an extra 500 caps from the father, which also bypasses the fight in front of the house.

Behind the scenes

 * Billy being stuck in the fridge may be a reference to real life deaths caused by children being locked in refrigerators prior to an act passed by Congress in the 1950s.
 * This quest may also be a reference to a scene from Indiana Jones and The Kingdom of the Crystal Skull, where Indiana Jones survives a nuclear blast by hiding in a refrigerator.
 * This is the second time in which this is referenced. In Fallout: New Vegas, an explorer hat and skeleton can be found in a fridge if you have the Wild Wasteland trait.

Bugs

 * Asking Bullet "What's he worth" will freeze the conversation after Bullet stops talking, resulting in the Sole Survivor either staring at him endlessly, or having to walk away.
 * When prompted to "Talk to Bullet" dialogue may not appear. This can be fixed by reloading or killing him.
 * Bullet may not correctly appear at the Peabodies' house to confront the player. Instead, he will spawn at the center of Quincy, which makes talking to him difficult since Quincy is protected by a large amount of Gunners. PC users may summon him with the console using the command . Otherwise, fast travelling away and back may resolve the issue. Another simple workaround is to kill Bullet on the first encounter.
 * If this quest is started before the player has encountered Tessa or Clint in Quincy, they will not drop their respective unique items, making them impossible to acquire.