Lyra Belacqua tries to prevent kidnapped children from becoming the subject of gruesome experiments, helps Will Parry search for his father, and finds that she and Will are caught in a battle between the forces of the Authority and those gathered by her uncle, Lord Asriel. Lyra Belacqua tries to prevent kidnapped children from becoming the subject of gruesome experiments, helps Will Parry search for his father, and finds that she and Will are caught in a battle between the forces of the Authority and those gathered by her uncle, Lord Asriel.