Now that Agent Sweetie Drop's best friend knows her secret identity, she has to be eliminated. And to prove she's still loyal to the Princess, the Agent must do it herself- Or be killed by assassins.
So, however reluctant, Sweetie Drops has a mission: get rid of Lyra Hearstrings.

Rated T for some references/jokes that should go over younger audience's heads.
(Sad tag doesn't cover the whole story.)