Robotech II: The Sentinels was an attempt to continue the original 1985 Robotech television series. The project was cancelled in 1986. The aborted Sentinels series would have followed the ongoing adventures of Rick Hunter and Lisa Hayes and the rest of the Robotech Expeditionary Force (REF) during the events of The Robotech Masters and The New Generation series.
Follow Rhonda, a woman with a dark past and a mysterious power, as she is pursued by an unknown assailant after the death of her father. Aided only by her wits and a pair of orphans, she journeys through a decaying, dystopian metropolis populated by raiders, gangs, and the supernatural. As she struggles to survive in this harsh urban tangle, she meets both friends and enemies, and searches for answers about this power, "The Ether", awakening within her.
When military experiments go haywire and trigger an atomic bomb, the consequences are of epic proportions. A monster arrives in the midst of the nuclear fallout, and Japan's defenses are helpless against it. Mankind's only savior is an irradiated water goblin from Japanese folklore called the "Death Kappa." The two rival monsters must go head-to-head in the ultimate battle between good and evil!