The race is on! The Hatford boys and the Malloy girls are ready to outdo one another again. Eddie is the first girl to ever try out for the school baseball team. Now she and Jake are competing for the same position, while Caroline and Wally compete for class spelling bee champ. Wally is itching to win, but Caroline the show-off plans to be number one.
As if that wasn't enough, the kids decide to race bottles down the rising Buckman River to see whose will go the farthest by the end of the month. The winner will be queen or king for the day while the other kids act as servants. But neither team trusts the other. When the girls go down to the river to try and capture the boys' bottles, Caroline falls into the rising water. It looks like those Malloy girls may be in over their heads this time!