are they going to find it? Sator is heartily amused as he can see their every move on the vision bug, and he gloats in front of a terrified Poopsnagle. Sator has also arranged for Matt to let Dingle and Murk into Secret Valley late one night to take the minerals and Salamanders from the safe in the barn. Blackmailing Matt into helping him get the Doctor's notes, Sator now has all he needs to make Mega Steam. In a kangaroo court, the children try a very despondent Matt, who tries to convince them that he has a plan to retrieve the booty from Sator. At first the children and the doctor are unwilling to listen, but when they realize that they do not have a plan without Matt's help, they decide to give him a last chance. Matt has been given a vision communicator as his payment for letting the enemy into Secret Valley He uses the communicator to contact Sator to record his voice, which they need to fool the computer that guards his castle. But to get into the castle, they have to somehow convince Sator to leave. Divina Devaga works in the department of antiquities in a museum in Sydney. Sator has never met the woman, although he knows she has a thick European accent. With the aid of Peter Poopsnagle's voice simulator, and a bit of make up, Carmen poses as the mysterious Divina, and fools Sator completely. Whilst she is dining with him at Roberto's Restaurant, the others reclaim the minerals, notes and Salamanders from Sator's strong hold. But Sator returns before they have finished and captures Peter Poopsnagle. This is when Peter is cruelly reunited with his grandfather. Undaunted, the doctor and children go to the Opera House, where they are successful in discovering that the final mineral is water. Back at the doctor's laboratory, they are working on the Mega Steam problem when Sator contacts them on Matt's communicator. He tells the doctor that unless he gets the notes back by the next morning, they will never see Peter or his grandfather again. Garcia concedes victory to Sator, but after the communication, he is successful in developing a small amount of Mega Steam. It is with this amount of Mega Steam in the Poopmobile that they are able to pull the side wall of Sator's computer room out and save Peter and