Joanna's plans for a quiet, cosy holiday season are shattered when her sisters call with the news that their dad, James, has split with his fiancée and isn't responding to any calls - and appears to have disappeared to the tiny Caribbean island of Nevis! The sisters decide to go to the island to save their father and bring him home for Christmas.

Upon their arrival, they discover that James, far from wallowing in a pit of despond, is actually living his best life: hanging out at beach bars, playing music with his famous friend Jimmy, living in a charming resort, and doing yoga on the beach with a beautiful instructor. Will the sisters' chaotic arrival shatter James's newfound peace? Can the newly reconnected Christmas family survive another crazy Christmas?