Lyra Heartstrings is a mare with a secret. As it comes to light it will test
Bon-Bon's faith in her friend as she struggles to uncover the truth and learn a secret over a thousand years in the making. Bon-Bon will need to join forces with Pinkie, Twilight, Rainbow Dash, and Spike as they attempt to find Lyra and the answer to the question that keeps becoming more complex. Who is Lyra Heartstrings?