When 11-year-old Alyssa is forced to spend the summer holiday with her mum's family, who she's never met before, her latent magical powers explode into life. Her great aunt runs a secret magic school in her spell garden where local kids can hone their power. The garden grows magical spell ingredients that have protected their family and the wider neighbourhood for decades - ever since they arrived from Jamaica with their mother Effie in the 1960s. But something is going wrong and the magic is running out! Can Alyssa use her new, unpredictable magic to set things right?