Variation

The item that acts as the catalyst to move the Relationship Story Throughline forward

The Relationship Story Throughline Catalyst is what creates breakthroughs and seems to accelerate the Relationship Story Throughline. In both the Overall Story and Relationship Story Throughline there occur dramatic "log-jams" when things seem to be approaching a halt. This is when the Catalyst is necessary, for its introduction will either solve the puzzle that's holding things up or else make the puzzle seem suddenly unimportant so the story can continue.