Koko on Call - Chuggington Author:Claudia Silver, Sarah Ball, Michael Anthony Steele (Adapter) It's a hot new train property for the 21st century. All aboard! Twiga the giraffe is having a baby and an excited Koko is given the important job of keeping watch overnight at the Safari Park. When it's time to fetch the doctor, Koko's headlight goes out. Can she remember everything she knows about nocturnal animals to help her find ... more »her way in time?« less