A situation takes shape that will lead to a problem or an opportunity

Buck sustains a loss
Bucks expectations or plans fail to deliver
Bucks behavior, ability, or nature lead him into a problem or opportunity
Buck performs a significant act
Buck is fed up with the state of his life 
Buck has a significant emotional reaction to someone
Something happens to the world so Buck cant keep functioning as he did before
Buck has completed one stage of life and is now expected to transition to another
many of these would alternately be a complication
a complication against proceeding with his life as usual.
Buck witnesses an event.
Something makes Buck look like a transgressor to Sam, an enforcer.
Buck learns information that demands action.
Buck is mistaken for someone else- framed, misinterpreted evidence, accident
Buck is abducted
Buck is lost
Buck receives information (true or not) or a call for help that acts upon his motivations.
Buck winds up in possession of an object, information or power
betrayed-by society, by himself or by a villain.
Bucks parent or guardian dies
Bucks guardian must go away to do something, leaving Buck to fend for himself
Buck winds up in possession of an object, information or power
Buck is caught between warring parties
Buck is at the wrong place at the wrong time
Buck is a passenger on a ship or a plane that something is about to happen to
Buck is involved in an accident.
Buck accidentally discovers Bert in hiding
Buck recognizes someone who doesn't wish to be recognized.
In the wrong place
Buck gets stranded in an unfamiliar place.
Buck is forced to spend the night in a dangerous place.
abandoned
Buck is accidentally or intentionally abandoned by his friends in a dangerous place.
Buck is accidentally or intentionally abandoned by his parents or guardian.
Buck is thrown out and must find his place
his place in society is taken over by another and he must find a new place
Buck is shipwrecked
Buck is wrongfully accused.
Buck gets on the wrong boat, bus or train.
Buck is forced to fulfill an idle boast.
Buck has been coping with an old problem- now the coping strategy breaks down.
Buck forced to take up sam's enterprise when he is unwilling or unable to carry it out.
Buck gets involved with someone who is not what he or she pretends to be
category:action