In post-revolutionary Russia, a young idealist named Grisha Glumov navigates the turbulent waters of daily life in a world marked by instability and change. With his rebellious spirit and messy hair, Grisha embarks on a series of hilarious adventures and emotional misadventures as he tries to find his place in a society that seems to be in constant turmoil. One day, he discovers an old diary that belonged to his beloved teacher, a man whose wisdom and charisma left an indelible mark on his life. As he reads the yellowed pages, he immerses himself in reflections on the past and present, all while dealing with his family's expectations and the pressures of a new generation seeking redemption.
With endearing characters like his best friend, a dreamer passionate about literature, and a charming girl who captures his heart, Glumov finds himself caught between nostalgia for simpler times and the changing reality that surrounds him. Through comedic and emotional situations, the young man discovers the importance of friendship, love, and the pursuit of his own dreams. Throughout his journey, he faces not only his own demons but also a social context that urges him to question his values and aspirations. The film becomes a vibrant reflection of a young man's internal struggle in a world full of promises and disappointments.