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Argh! The twins encounter space pirates, a scotsman and ice cream people as they learn about free trade and why no one can make a pencil by themselves.
A science camp rivalry threatens to destroy Emily's dreams. Grandma takes the twins to India and a worm battlefield to learn about the golden rule before it's too late.
With the help of Ben Franklin, the Twins learn what it means to be an entrepreneur and start their own corndog stand.