The cartoon is premeiring on Sept 2nd on Cartoon network
And here are the episode synopsis
Episode #1: Doomsday
Original Airdate: September 2nd, 2006
When Reed is accused of having purposefully exposed Susan, Johnny and Ben to the cosmic rays that transformed them into the Fantastic Four, the team is torn apart. But as Susan, Johnny and Ben individually wonder if Reed is capable of such a betrayal, they're attacked by the mastermind behind the plot against Reed – Doctor Doom. Now the team has to escape Doom's prisons in order to save Reed and prevent Doom from plunging the city into the Negative Zone.
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Episode #2: Trial By Fire
Original Airdate: September 9th, 2006
Johnny is put on trial for crimes against the Kree Empire by Ronan the Accuser after destroying the latest in a line of Kree Sentries, alien robots that have been observing the Fantastic Four. When Johnny chooses Reed as his lawyer, Ben and Susan take the stand in Johnny's defense. But defending Johnny's reckless behavior is tougher than they thought, especially when the accused is presumed guilty before the trial even starts.
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Episode #3: Zoned Out
Original Airdate: September 16th, 2006
When Johnny gives an unauthorized tour of Reed's lab to his friend Frankie, things go bad. Frankie is sucked into another dimension, and Johnny goes after her to try and keep anyone from finding out. But what he didn't realize is that something came out of the dimensional portal as he went in - a harmless little bug. Now Johnny and Frankie are trapped and on the run while Reed, Ben and Susan are left to deal with that little bug.
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Episode #4: Doomed
Original Airdate: September 23rd, 2006
Doctor Doom hacks into Reed's consciousness, transferring his mind into Reed's body. Now trapped inside Doom's body, Reed must fight his way back to his family and friends before Doom transforms the Baxter Building into a weapon that could wipe out the Fantastic Four and half of the city.
Sounds very mundane