Boy Nobody is the perennial new kid in school, the one few notices and nobody thinks much about. He doesn't stay long just long enough for someone to die-of "natural causes." Mission accomplished, Boy Nobody disappears.
He show up in a new high school in a new town under a new name, makes a few friends.
Boy Nobody is given a new assignment to assassinate the Mayor of New York City. In order to do so he is transferred to the school of the Mayor's daughter, in which he gets to know.
He gets invited to a party in the Mayor's mansion.
He gets into a conversation with the Mayor. Boy Nobody finds that this his chance to eliminate his target. He pulls out his weapon of choice, a weaponized ballpoint pen.
Right when he gets within striking range without the Mayor noticing, the Mayor's daughter walks in ruining his first chance of accomplishing his assignment.