Stuffy government fisheries scientist Fred (Ewan McGregor) is asked by a fishing-obsessed Arab Sheik (Amr Waked) to do the seemingly impossible - introduce British salmon to the Wadis of the Yemen. Despite considerable trepidation, Fred is finally won over by the charismatic Arab. Fred also begins to fall for the Sheik's beautiful legal representative Harriet (Emily Blunt); and so he rises to the Sheik's eccentric challenge, casting off his English reserve on a transformative journey of self-discovery and late blooming love.