The Lost Missions kick off with a clone troopers story, pretty much always my favorite. During a combat offensive, clone trooper Tup goes into a strange trance state and kills Jedi Master Tiplar. Neither Tup himself nor anyone else seems to understand what has happened. Dooku and Darth Sidious have an inkling. When word gets back to them about the incident, they move quickly to get to Tup so they can find out what has gone wrong with his "programming." We as the viewers know what this is really all about: Order 66, the operation carried out in Revenge of the Sith in which the clones simultaneously slaughter nearly all of the Jedi. This is the first episode of a four-part arc.
Tiplar was a Mikkian. Her twin sister Tiplee, also a Jedi, was with Tiplar at the time of her death. The design for the two characters originated with an unused concept for a female Sith Lord developed for Attack of the Clones. Both of the twins were voiced by Anna Graves.