A young woman named Tasha arrives at the apartment to give JR cash and a cellphone.

Following instructions, JR illegally purchases high-powered firearms and hijacks a scenic tour helicopter, forcing the pilot at gunpoint to extract Lynch and his gang under heavy gunfire.

There he recruits Lynch and his men to execute a gold heist at Kalgoorlie, with an expected payout in the millions.

Lynch tells JR that his role in the heist will be to access the room with the gold and ensure that no employee presses a panic button.

Back at Sam's estate, the gang plan the heist and a fight breaks out between JR and Josh.

Lacking proper immigration papers, she is angry with JR's impulsiveness, but she proposes meeting at the beach near his house.

The next day, the group infiltrates the quarry and inserts JR into the ventilation shaft above the gold room.

JR successfully intimidates the employees into not pressing the panic button and lets the rest of the crew in.

Lynch tells Josh to guard the employees while JR watches the gold poured into bars.

Later JR sends Lynch a message detailing where the gold has been left for him, written on the back of a photo of a pregnant Tasha, hinting at an optimistic future.

It currently has a Rotten Tomatoes rating of 62% based on 76 reviews, with an average score of 5.7/10 and the consensus: "Gritty, stylish, and smart, Son of a Gun serves up plenty of genre thrills and offers a new change of pace from Ewan McGregor.