Prequel to Transformers One.
35 Cycles after the fall of the Primes, K-214 is just another nameless, cogless bot, riding on the promises of the false Prime Sentinel, trying to make as best a life as she can for herself. When she suddenly finds herself in a life threatening situation and is confronted with the horrible truth of her existence, she is charged with a familiar relic, and asked to aid in bringing an old ally of the High Guard back into their fold. But even with the help of a High Guard ally at her side, exactly what sort of difference can one nameless, cogless bot possibly make against the might of Sentinel Prime and his forces?