Detection.There is a peaceful day on the A-Base at last, so that Jetfire and Smokescreen can take the liberty of competing in arm-wrestling a little, and all the others watch their tournament. Alexis is a fan of them both, and the boys don't understand her. Meanwhile on the D-Base Thrust explains his recent failure by the fact that the 'Cons, unlike the 'Bots, don't know how to work as one team. He draws up just another battle plan for Megatron and promises him that some new Decepticons will soon enlist in his army. The Autobots repair the ancient spaceship and make preparations for departure to their native planet Cybertron. In that time Jetfire runs through the video tapes of the previous clashes between the Autobots and Decepticons on the Earth. The children are near him. Suddenly Jetfire pays attention to Sideways and notices that the 'tramp' acts rather strangely for a Decepticon. He wonders if Sideways is a Decepticon at all. On the D-Base Sideways incites Demolishor to destroy Thrust. He convinces him that it will be only for the Megatron's benefit. Demolishor believes him and haves a fight with Thrust. In the meantime, Sideways is sending messages to an unknown recipient. But just in this moment he is caught by Starscream. So his double game is revealed at last. Sideways tries to escape but Thrust overtakes him. Megatron cuts the traitor up with the Star Saber. Sideways' body is reduced to the debris but he turns out to be still alive although as a mysterious ghost. At the end of the episode, the Autobots engage in battle with the Decepticons on the seashore. Who will win a victory in this time?