On the shores of the ancient Italian Lake Bracciano, where the smell of silt and wet feathers smells, the Colombo family settles. A young woman, Antonia, takes care of four children and a disabled husband alone. The eternal struggle with the imperfections of the world makes her proud and uncompromising. She raises her only daughter Gaia in strictness and teaches her to rely only on herself. The little red-haired girl turns out to be very capable. She learns: to be strong, not to complain, to read books, to dive into the lake, even if the current drags you to the bottom, to hide her phone from her mother in a shoebox, and her despair is where no one can ever find it. “The water in the lake will never be found.” "It's never sweet" is a complex family drama, in which, like in life, there are still glimpses of happiness.