From the announcement:
For 15 years war has engulfed the Iron Kingdoms. In this crucible of conflict, countless warriors have answered the call and forged their legends. Now it is time for those legends to mentor the next generation of heroes.
WARMACHINE: First Shot is a very special Organized Play team event specifically designed as a way for parents to introduce the joy of WARMACHINE to their of-age children. In this one- day event, parents take on the role of mentors, controlling event-specific mentor solos while their child takes command of a small WARMACHINE army built from the First Shot event rules. This event is all about providing a fun introduction to the hobby and game of WARMACHINE.