Star Wars: The Clone Wars: Darkness on Umbara Preview

To paraphrase Metallica, Exit light, enter night, take my hand we're off to Umbara-land.

After taking a one week hiatus, TCW returns next Friday with the first part of a four part story arc set on the perpetual twilight planet of Umbara.  Episode 4.07 "Darkness on Umbara" looks like a ton of fun and we get a full scale cavalry attack by the GAR.

"The first step toward loyalty is trust."

When Anakin is forced to temporarily turn over command of his clone troopers to a new commander, the Jedi Pong Krell, tensions begin to run high as the clones are assigned with a very deadly mission to take the capital of Umbara. 

 StarWars.com has a high quality version of the preview for the episode.