Miriam Margoyles, Wayne Sleep, Bobby George and Jan Leeming reunite to head to the hot and vibrant city of Havana, Cuba, where life expectancy is high, food is rationed and the way to travel is in iconic 50s cars. After being wowed by the pink Cadillacs that pick them up from the airport, the group spend their first night learning to dance with the locals. Later in the week, Wayne visits a dance troupe and realises his classical training doesn't count for much when it comes to learning Cuban dance. But much to his joy, he is invited to participate in the annual Cuban carnival. Meanwhile, Miriam struggles to adapt to life without high-speed broadband, although at least she still has gin. Perhaps the biggest change comes for Jan, who meets a Cuban man while sea swimming. Not put off by the language barrier, the pair decide to go on a date. As the visit draws to an end and the group celebrate with their new friends, there's time to reflect on life in this fascinating and fast-changing country.

After exploring what it is like to grow old in India, Miriam Margolyes, Wayne Sleep, Rosemary Shrager and Bobby George reunite for another global adventure. This time they sample retirement in China. The group stay in the capital of the Sichuan Province, Chengdu. A bustling city of over 14 million people, all the group find the language barrier difficult, and Miriam in particular struggles with the regional cuisine. A swim in a high-tech pool, in one of the world's biggest buildings, makes a bad situation worse as Miriam discovers a modern China at odds with her memory of it from a trip 30 years ago. After experiencing city life, the group opt for an overnight stay in a country retreat. A ride on a high-speed bullet train takes them high into the mountains surrounding the city. Home to the giant panda, a feeding session at a local sanctuary leads to an emotional moment for Miriam, while Rosemary can't quite understand what all the fuss is about. Back in Chengdu, a final night at the Sichuan opera gives the group an opportunity to reflect on their bewildering and dazzling time in China.

Miriam Margoyles, Wayne Sleep, Bobby George and Rosemary Shrager experience retired life in Japan, a country with one of the longest life expectancies in the world. They move in with 73-year-old twin sisters in historic city of Kyoto, where Miriam immediately struggles with Japanese etiquette. The group join elderly residents across the country in a nationally broadcast morning fitness class, and also look into gaining employment - many retired people in Japan actually keep working into their seventies and eighties. Bobby and Miriam look for work at an OAP job centre, while Rosemary and Wayne get jobs in one of the busiest noodle bars in Kyoto. Another traditional activity is taking a soak in the communal hot springs dotted around the country, though the idea of being naked does not appeal to Miriam and Rosemary.

Miriam Margolyes, Bobby George, Sheila Ferguson and new recruit Stanley Johnson explore retirement in the largest country in the world, Russia. First stop on their journey is the cultural capital of St Petersburg, where they visit a lavish retirement home for retired actors, before leaving their comfortable surroundings of the city for a night in a Russian Sanatorium.

Marigold On Tour favourites Paul Nicolas and Rosemary Shrager are joined by comedy duo Ian and Janette Tough to experience the secrets of a happy retirement in Mexico.

Miriam Margoyles, Wayne Sleep, Bobby George and Rosemary Shrager jet off to Florida, a major retirement hotspot thanks to its low taxes and sunny weather. Many retirees here live in gated villages, and the gang experience living in two different communities at either end of the price scale. As well as taking part in more traditional retirement activities such as daily exercise, bingo and dance classes - the latter started by Wayne - there are visits to a local gun shop and a look at an alternative way to stay looking young - plastic surgery. The idyllic atmosphere does not last forever as Miriam becomes involved in a heated political discussion and struggles to fit in.