Renton has left Charles and Ray to return to Eureka. Meanwhile, aboard the Gekko, Eureka is pining for him and starting to come to terms with her own feelings. After Renton collapses from exhaustion, he awakes in a small but comfortable cottage and meets William, his rescuer. As Renton recuperates, he tries to tell William that his wife, Martha, has desperation disease, but William disagrees completely. In the end, Renton leaves them to return to the Gekko, inspired by what William has shown him.
Desperation caused by separation. Humans are paradoxical, in a sense that we don't realize just how lonely and miserable that we are until we stop acknowledging the existence of each other.