Story objective

for every objective there is a motivation, or multiple motivations.
Buck fights for his beliefs.
Buck tries to gain Sam's trust.
Buck determines to get the doohickey
Buck decides to find himself
Buck seizes an opportunity
Buck searches for someone or something.
 
Buck pursues Bart.
Buck investigates a potential danger
Buck tries to overcome his personal shortcomings.
Buck decides to become an enforcer.
Buck decides to commit a transgression.
Buck goes on the run from the enforcers.
Buck gos forth into the world.