Adventures aren't expensive. But even Alma and Milan need money. They need a rope ladder for their treehouse. Not only do they build the treehouse themselves, but they also earn the money to buy a rope. It's not a bad idea at all if you know how to negotiate and trade. Alma and Milan reach their goal and even have some money left over. They save it. Because money doesn't go bad, even when you set it aside for something big – and that idea is already buzzing in their minds.