A big grey elephant is following Olive's father around. It leaves with him for work and trails behind him when he comes home, keeping him heavy and sad. Every day, Olive wishes it would disappear. When she is asked to bring something old and wonderful to show her class, Olive immediately wants to bring her old bike - but she will need her father's help to fix it. Teaming up with her cheery grandad and best friend Arthur, she sets out to chase the elephant away.