The 21-day social experiment gets underway with the mothers receiving an intensive makeover to transform them into undercover 21-year-olds. They are then thrown into the world of selfies, online dating and sexting.

In the 2nd phase of the experiment the mothers experience the world of work for Gen Z. They try to enter the world of a social media influencer and taste the harsh reality of the gig economy and zero hours contracts.

The 3rd phase of the experiment pushes the mothers out of their comfort zone as they are asked to accept the differences that Gen Z celebrate by exploring the new sexual revolution, disability and the gender-quake.

The experiment introduces the mothers to causes their daughters care about from veganism to politics to feeding the homeless. They then attend an event at which the mothers reveal their true age to those they have encountered.