When eleven-year-old Vanessa discovers an abandoned museum, she starts filling it with her own projects and art and memories, thinking maybe, if she can put them all together in just the right way, she can finally understand why she and her relationships are the way they are.
In World War II England, ten-year-old Lottie is transported via a portal to present day Wisconsin, where she must find her way back to her family and her best friend, Kitty.