This story is a sequel to Shadowbolt Chronicles: Codename Prism
Based on the S7E18 Daring Done, possible spoilers.
When Daring Do publishes the article about retirement Rainbow Dash insists that they should investigate. One thing led to another, and they ended up chasing Dr. Caballeron. What exactly did Daring Do do to the doctor, and how many earth ponies does it take to capture a Pegasus?