Olivia and the rest of the Go Green Racers are headed to Bunchgrass Hills Conservation Area, a beautiful grassland in British Columbia. For this leg of the race, they need to investigate a creek and figure out why it’s drying out.

Having studied this in school, Olivia feels ready for the challenge, but Ryan, who thinks science is for boys, is sure he’ll leave Olivia in the dust. Can Olivia prove him wrong?