Tomáš is on the verge of life and death. His extreme obesity has trapped him in an apartment from which he hardly leaves. He spends his days on the couch surrounded by food. Tomáš's obesity is destroying not only his life, but also his entire family's. His health condition is serious and he is starting to realize that he can no longer turn a blind eye to it. Tomáš wants to change himself, he is determined to undergo a year of hard work and strong will, because he knows that this is his last chance to save his life.

Dominika has suffered from obesity since childhood. She heard mockery about her weight every day, which caused her to have literally zero self-confidence. Dominika has reached the point where she hates herself. Even though she is ashamed of her body, she has never found the strength to fight obesity on her own. She considers her life wasted. She is at the bottom and the only comfort she has found is food. But now she has finally decided to change - she will not give up and give her life a new meaning. During the next 365 days, she will not only have to fight hard with her kilos, but also the hardest thing - finding her lost self-confidence.

Karel Horváth is a former football player. However, due to a serious car accident, he had to give up his hobby overnight. So he traded his love for sports for sweets, which he developed an addiction to. His weight skyrocketed and currently obesity is limiting him so much that he is neglecting what is most important to him - his family. Karel has decided not to let it go. He is ready to get back in shape in just one year and fight for a better life.

Libor is a well-known youtuber who built his career on presenting an unhealthy lifestyle. But now fatty food and alcohol are taking their toll. At a young age, Libor was already developing serious health problems related to obesity, so he decided to become a new man. Libor has a tough year ahead of him, full of hard work, where he will not only have to fight for a better body, but also a total change in his approach to life.

Gábina is a young girl in her thirties who hides at home and eats. Instead of enjoying life, she is ruining her health. Gábina has taken her parents' divorce hard, and it has taken a toll on both her weight and her zero self-esteem. Nowadays, she is in a situation that even her fitness trainer mother can't help her with. But now Martin comes along to give her a second chance at life. Gábina has a year of hard work ahead of her where she must learn to value herself. Will she be able to do it and finally win the battle with her pounds?

Jarda is 19 years old and facing a terrifying diagnosis. He is at risk of not even reaching his 30th birthday because of his obesity. Despite his parents' best efforts, Jarda has never managed to lose weight. Fast food and lack of exercise have always won out over Jarda's own will. Now Martin is giving him a chance to change. Will Jarda finally win the battle with himself?