When her two younger siblings are too disruptive in the house, Carmen tricks them into going outside to play. Salvador, the middle brother, and María, the baby sister, go their separate ways to build their own houses.
Blossom and Snappy eat popcorn and try to find out who has more. They go to an ice cream shop where they count ice cream containers using multiplication, and they use math to figure out if they have enough money to buy popcorn.
Blossom and Snappy discover a new window that Robbie put in the garage and decide to measure it. They discover the difference of standard measurement and non-standard measurement during their visits to McDonalds and Gorin's Ice Cream.
Blossom and Snappy decide to surprise Robbie by making her a pumpkin pie. They visit a pumpkin farm, dairy farm, and a dairy plant, finding out all the ways math is used in each of these places.
Blossom and Snappy go back to the pumpkin farm to further investigate pumpkins to make pies for Robbie. Then they go to a farmer's market to explore how vegetables are sold by weight. They also visit a packaging company to work with multiplication.
Blossom and Snappy want to buy something for Robbie for her birthday, so they decide to do some chores to earn money. Once they've earned some money, they go to the bank to open up bank accounts.