Excellent story. The characters are likable, funny, and interesting. The Clone Wars Secret Missions is one of SW's most underrated gems. Despite not being a fan of TCW I haven't finished watching it to this day, not even a full season; I must say that this story is enjoyable due to the introduction of characters like Dooku in the main plot (one that is kept secret from us for the moment).
The story follows a Jedi master named Ring-Sol Ambase, who has taken on a new Padawan of the Chiss race known to all as Nuru Kungurama. Ambase became Kungurama's teacher because his former teacher died in the Battle of Geonosis and as expected, both have not finished connecting and their relationship is not bad, but very distant. Here I come to one of my main problems with this element introduced in the 3D series, I don't like to see how Padawans are assigned to masters just like that, when in novels like "Jedi Apprentice" we are stressed that to be a master and a Padawan this relationship must be forged by the communion and guidance that both have with force. Returning to the story, Ambase receives orders from Chancellor Palpatine to head to his home planet, Kynachi, because remains of the Malevolence (General Grievous's cruiser, now in ruins) were manufactured there.
Ambase decides not to take Nuru on this mission, because their relationship is very complicated and such an important mission, as well as dangerous, would not help much to improve it. Nuru ends up disobeying this order because of a sensation in the force that tells him that his master is in danger, and he secretly embarks aboard the cruiser. Upon reaching Kynachi, the ship is attacked and shot down by Cad Bane with the help of the separatists, who by orders of Darth Sidious, had to capture the master Ambase. Already on the planet, the survivors, including the clones, question what could have caused the accident, and although at one point they think that Nuru could have been responsible, they end up trusting their Jedi commander. Along the way they are helped by a smuggler named Lalo Gunn and her droid Teejay; as well as by a mysterious person who pretends to have been attacked by the separatists just like our protagonists. This strange being is revealed to us as Cad Bane, who tricks Nuru and his team to infiltrate and rescue Master Ambase. Despite being very close to achieving it, the Skakoan supervisor Umbrag activates the self-destruct protocol on the entire facility, apparently killing Ambase. However, Ambase had been captured by Cad Bane and later delivered to Dooku on one of Bogden's moons. At this, Nuru and the clones leave the planet to go to Coruscant. Already in the capital of the Republic, the chancellor assigns Nuru and his new team now known as the "Breakout Squad" to go on a diplomatic mission to Chiss space. The team accepts and aboard Lalo Gunn's freighter and Cleaver (as the droid is now known for having merged with a droid commando) they set out on a new adventure.