Tin and Tan are brother and sister. They live in a forest reserve, in direct contact with nature. For them, every day is a new adventure. Tin is 3 years old, wild and enthusiastic, and he's not afraid of anything. Tan is 6, she is curious, clever and always ready to help. With large doses of energy and humour, Tin and Tan discover the world around them and learn to deal with different emotions, while having fun helping the animals from the reserve.