Max's travels to Hollywood where, after auditioning for a role as an alien on the series "Enterprise," he unmasks the sole surviving shape shifter - a man named Kal Langley (Joe Pantoliano) who offers Max's last chance for finding his son. But his fellow alien, who has become an extraordinarily successful movie producer i n his earthly incarnation, has other ideas. Back in Roswell, Isabel and Jesse struggle over how to reveal their engagement to their families.