Before Gran died, Gramps was the beloved Other Father Christmas at the local community centre Grotto – so when Santa Claus announces his retirement, ten-year-old Mikey secretly enters his reluctant Gramps into Santa Search, a magical competition to find the next Father Christmas.

Swept away to Christmasland – a world of gingerbread escape rooms and bottomless hot chocolate – they must face enchanted trials, outwit a mysterious saboteur, and rediscover the true meaning of the season.