After visiting a sanctuary for retired lab chimpanzees, Marty wants to follow in the footsteps of her idol Jane Goodall and help with their care. But "adopting a chimp" is expensive, so Marty and her third-grade pals hatch a plan to raise money by holding a talent show at school and opening a pet-sitting business in Marty's basement. It turns out that each pet has a personality of its own, and wrangling them is much harder than Marty expected. How will Marty keep her latest great idea from going to the dogs?