Explaining Prologue Mission from GTA 5!

Explaining prologue mission from grand theft auto 5. The mission starts with Michael, Trevor, and Brad robbing a bank in North Yankton. When the alarm is triggered, the trio make their escape, but are ambushed by police outside. A huge shootout ensues as they try to get to their getaway car. Brad then Micheal are shot after the car crashed. The mission ends with Trevor escaping into the snowy scenery. Later on Micheal appears at his own funeral alive.