Backed by his family, 64-year-old Fred takes a no-nonsense approach to the Cube. While personal trainer Annette hopes she can stay calm under pressure and take home a cool quarter of a million pounds.

Telecoms trainer, Lorraine wants to take her family on a trip of a lifetime. While trainee nurse, Louise wants to win big to buy a horse for her daughter. But can they gallop their way to the finish line and beat the cube for a quarter of million pounds?