Ruin.The Autobots receive a new strange signal. It is a picture of a beautiful blonde girl. Carlos is charmed by her. He is sure that she is in danger and demands his friends to leave for rescuing her. But the signal appears to be received from under the Ocean. Red Alert explains that it is a Mini-con signal in reality, but Carlos doesn't believe to him. The Autobots submerge to the Ocean depth (with Rad, Alexis and Carlos in Optimus Prime's cab). There they see the ruins of an ancient town (Rad thinks that it is Atlantis). While they drift under the sea the Decepticons attack them. The Optimus' cab is damaged and the children almost sink. But Optimus Prime, with the aid of his comrades, succeeds in breaking through the gate of a central tower, where he finds a kind of an air bell so that the kids can breathe well again. Optimus then returns to his guys who fight the 'Cons. While the robots face off, the kids find a hologram of the girl. She tells them about the three Mini-cons which her people had uncover at one time. They could form a mighty sword named Star Saber that resulted the ruined country as its people fought to gain possession over it. She begs them never to wake these Mini-cons and use the Star Saber. But at this time Megatron breaks through a wall and gets the Mini-con (it proves to be one of the "Air Defense Team"). Now the tower is completely demolished together with all the remains of the ancient civilization. The Autobots and their children partners return to the Base. But Carlos is upset very much because he knows now that the blonde beauty is only a hologram, and Rad comforts him.