Eight-year-old Miranda Chen has a knack for noticing the impossible, from backwards-ticking clocks to her brother’s "imaginary" friend. When she discovers a missing metre of space hidden within her hallway walls, her curiosity uncovers a centuries-old secret. Guided by a mysterious voice and a key found where it shouldn't be, Miranda reveals a hidden world tucked behind the wallpaper. Now, she must step into the unknown to protect the very foundation of imagination and wonder.