Time Portal

Melody has never experienced poverty or need of money. May has never lived in a mansion, eaten as much as she could hold, or shopped at a mall. But that was before they found the time portals. Together, they come up with a plan to switch places, but then something goes wrong. They find themselves making taffy for an evil scientist whose ambition is to capture all the kids in the world from the past, present, and future. Can they escape before time is up?