During Spike's travels throughout Equestria, he comes across a certain starving changling queen. Against his better judgement he decides to help her, this one act of kindness will put in motion a tale of loss and gain.
The Changeling Swarm was expelled from Canterlot. What happened to them, no one cares. Unfortunately one of them grabbed onto a Guardspony when the Loveblast hit, taking him to a sudden flight.
A changeling is captured and Princess Twilight is tasked with questioning it. Thinking it will be easy, and perhaps finding out what makes these bugs tick, Twilight goes the scientific route, but finds something she did not expect.