How I Taught Myself to Be a Child
Wie ich lernte, bei mir selbst Kind zu sein (original)
Paul Silberstein, youngest son of an urbane but deeply strange old Austrian dynasty of confectionery millionaires, discovers the power of love and humor - and also his own extraordinary ability to shape his realities. Based on the motives of the short story with the same name by André Heller.
Starring Karl Markovics, Sabine Timoteo, André Wilms, Valentin Hagg
It's a drama and action & adventure movie, and has a rating of 6.6 out of 10 from Imdb which is usually fine for this kind of movie.
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Not found streaming from United States.