Alberto doesn't do well in science, even though his dad is a scientist who studies jaguars and runs projects to free them. Alberto prefers to draw.
One day, by the lake by Alberto's grandparent's house, Alberto and his best friend Pedro see a mysterious man stealing frogs from the lake!
Alberto shows his dad a picture that he drew of the frog. Apparently, it is a very rare frog.
Alberto, his dad, Pedro, and Pedro's dad drive to Santa Cruz to go investigate the zoo there.
When at the hotel, Pedro and Alberto want to go explore outside near the jungle, when they see a carnival. They look into it and they see mysterious man from the lake, stealing Wayra, the mother jaguar his dad was trying to free! Alberto draws a picture of the man.
Pedro and Alberto are called heroes after Alberto's drawing helps them find the criminal. They are selected to be the writers of the school newspaper. After that, they release Wayra in the wild to be free with her babies.