Mission to Grievous's castle

In 21 BBY, the second year of the Clone Wars, a Galactic Republic team led by Jedi Master Kit Fisto and his former apprentice Nahdar Vebb undertook a mission to recapture the escaped Viceroy of the Trade Federation Nute Gunray on Vassek 3. When the group reached the moon, however, they followed the signal from the Republic cruiser the Viceroy stole to escape to a mysterious fortress on the third moon of Vassek. The group entered and believed they had cornered the viceroy, but after cutting through five B1-series battle droids, they discovered that this was merely a hologram.

After this discovery, Count Dooku appeared to the group via hologram, and offered an alternative prize. The Jedi and Clone troopers descended further into the fortress, and after passing several statues they discovered that they were in the lair of General Grievous. Dooku believed that Grievous needed a test to prove his effectiveness, and had engineered for the Jedi to come to the moon. The Jedi surprised the general upon his return to his fortress, and after killing several of the clones, Grievous escaped.

Grievous briefly spoke with his doctor, EV-A4-D, who prepared for Grievous' repairs, while Grievous engineered the deaths of the remaining clones, with the Jedi barely escaping each time. Grievous then spoke with Dooku, and learned that the Count had been the one who had sent the Jedi here, and that Dooku was using this to test him. Grievous ended his conversation with Dooku by turning off his hologram, and eventually engaged Nahdar in lightsaber combat, and killed the young Jedi Knight. He then fought against Fisto, until the Jedi was able to escape aboard his Delta-7B Aethersprite-class light interceptor piloted by R6-H5.

Grievous reported to Dooku, and the Count remarked that there was "still room for improvement." Fisto later spoke with Grand Master Yoda and Mace Windu about the mission, and revealed that Nahdar had attempted to answer Grievous' power with his own, and Yoda stated that this was not the Jedi way, and that the Jedi could lose their way due to the war.

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