It is the fourth term and BFFs Nina and Jessie can’t wait for their school inter house athletics meeting. Nina’s favourite event is the high jump, but the new girl in their grade is giving Nina a run for her money! Soon after Nina’s journalist father takes them along to visit the new sports drink factory in town, the two friends find themselves in a mystery involving a mad scientist, more frogs than they can handle, a pet rat and a few crazy zits . . .