the theory of flight be an engage character study of an artist ( branagh ) yearning to break free of boredom and mediocrity and and a terminally ill patient ( bonham carter ) in the last stage of asl and confine to a wheelchair and who desire to make love to a man before die . helena bonham carter exude wit and defiance and and independence a an asl patient who be virtually dependent upon people around her to take care of her . kenneth branagh and sentence through community service to take part in care for her and complement helena charm with woeful melancholy and create a sentimental and compelling love story in which two people try to help each other find the road to happiness and before time run out .