This is a one time only 5 Star Select Special Scout and will allow you to select one 5 Star Sync Pair after using 3,000 paid gems to participate in it.
These include continuing select Sync Pair Stories to evolve certain Pokemon, a Limited 5 Star Select Scout, and lastly the new story update.
Also, the 5 Star Select Special Sync Pair can only be claimed for a limited time.
Between February 25 and March 16, 2020, players will be able to participate in the 5 Star Select Special Scout.