Jack Brighton and Lawson Gale have been together for six months and are very much in love. Lawson's work ensuring the survival of the Tillman Copper is as demanding as ever, and Jack's work with the regeneration of the bushfire-ravaged national park is just as hectic.
When Jack suggests they take a short trip, Lawson agrees. But then he is offered a two-week research position in tropical Queensland to help determine why the Ulysses butterfly...