The latest salamander has been attached to the Jambaroo Shield, a trophy which is to be presented to the winner of a horse race called the Jambaroo Shield stakes. The children decide to enter the race with Victory Stride as their champion, but he needs a trainer. Dingle has been sent to buy all the other horses off; Sator wants to win the race for himself. He purchases a horse called Black Eye, and a jockey. Dingle then keeps an eye on the children and sees them searching for the mineral along the river. It transpires that old Sid Chesney, a horse-trainer the children have been able to persuade to train their horse, also knows of the whereabouts of the fifth mineral, for he was the person who found the Salamander originally.

En el Valle Secreto Sparkes y Robin descubren que la salamandra que el Doctor García estaba buscando está en uno de los caballos que va a participar en un trofeo que tendrá lugar en Rivers Bend.