You’ll be in a flashback sequence, about one week ago before the heist. Lincoln just got off from Vietnam and his adoptive brother, Ellis, arrives to pick him up. You’ll have to drive to Sammy’s Bar which is marked in the map. To enable the route or “GPS”, select the marker and the optimal route will be laid down for you. Just follow the road signs as they appear to reach your destination.
As you drive, you’ll get a tip about Police Awareness. Just avoid running over civilians or breaking too many traffic rules with them around to avoid triggering a chase. Once you’re near your destination, you’ll see the green marker right outside the bar. Park your car there and enter the building for another cutscene.
After the scene, you’ll have to rest so go downstairs to the basement and you’ll find two collectibles in the room where your bed and safe is located. You can’t interact with the safe yet but you can get the Playboy magazine on the desk and a Vargas painting on the column in front of the tv. To continue with the story, interact with the bed to take your sleep.
Once you’re up, go upstairs to trigger another cutscene. After the heated argument between Ellis and Sammy, Father James will arrive. Sammy will send you to help serving the hungry folks in the soup kitchen. The mission ends.