Star Wars: The Clone Wars - Season 1 - Eps 18: Mystery of a Thousand Moons
Even though the lab has been shut down, Dr. Vindi manages to activate the dreaded Blue Shadow Virus, infecting Ahsoka, Padmé, and many clone troopers. The plague is fatal within 48 hours. Anakin and Obi-Wan must travel to the mysterious planet, Iego, to secure the only known antidote to the sickness. Anakin and Obi-Wan arrive on the mysterious planet to find its population living in fear of a mysterious force that has been killing anything that tries to leave their world. With the help of Jaybo Hood, a clever Iegoan boy, Anakin and Obi-Wan must solve the planet's mystery before they can leave, and before everyone infected with the Separatist virus dies!
About Star Wars: The Clone Wars

Title: Star Wars: The Clone Wars
First Air Date: 2008-10-03
Last Air Date: 2020-05-04
Status: Ended
Rating: 8.46/10 (from 2082 votes)
Language: EN
Seasons: 8
Total Episodes: 133
Network: Cartoon Network Netflix Disney+
Genres: Action & Adventure, Sci-Fi & Fantasy, Animation
Production Companies: Lucasfilm Animation, Lucasfilm Ltd.
Synopsis
Yoda, Obi-Wan Kenobi, Anakin Skywalker, Mace Windu and other Jedi Knights lead the Grand Army of the Republic against the droid army of the Separatists.
Cast

Ashley Eckstein
Ahsoka Tano (voice)

Matt Lanter
Anakin Skywalker (voice)

James Arnold Taylor
Obi-Wan Kenobi (voice)

Dee Bradley Baker
Clone Troopers (voice)

Tom Kane
Yoda / Wullf Yularen / Narrator (voice)