The story revolves around a kind British High Court judge, who must decide on the most difficult case of her life, reported Deadline.
Judge Fiona Maye's job often strains her marriage but she faces a real turmoil when she is to decide on the case of a 17-year-old boy suffering from leukemia.
The child does not want to be forced to have possible life-saving blood transfusions because it goes against his religion.
The project would reunite Thompson with her "Love Actually" and "My Fair Lady" producer, Duncan Kenworthy.
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