Stelly is a Unicorn with an invisible disability which sometimes gets in the way of having fun with her friends. One day she decides to travel far away to visit a magic hospital where a special team of Doctors may be able to help with her health. We follow her journey as she navigates this scary and lonely time in a new place, new friends and witness a transformation, or ‘reboot' as she calls it. This is a story of resilience, friendship and discovering her new strength and to show that we never give up. Will she return as a new unicorn and be able to play in the sunshine again? Will Stelly's friends recognise her?