For most changelings, their life is simple. So simple, they are often not given a name. Manipulated by the Hive Queen via the Hive Mind, they are oblivious to many things.
After a failed invasion, Chrysalis tries something new by sending a changeling to adopt a false identity and infiltrate Equestria. However when he assumes an identity he shouldn't have, he unknowingly brings darker motives into play and now terrible truths must be revealed.
Caught between two worlds–the illusion he's been fed by the Queen he loves, and the reality supported by Ponykind–he must decide what is really best for the Hive and its members.
Whether or not he can obtain that is a different matter entirely.