A fashion show hosted by Lana Lang is underway. Clark and Jimmy are present to cover the trendy show. Lana reveals her star model: Darci Mason. While Darci flaunts her swimsuit, a strange car drives up and a cowboy, an astronaut and a knight emerge. They attack the guards and the astronaut goes after Darci. Superman arrives on the scene and destroys the knight. He then confronts the cowboy and punches its head off. However, the astronaut flies off with Darci. Superman gives chase and manages to save her.
Back at his hideout, Toyman plays with a doll which he calls Darci and vows she'll soon be all his. The cowboy arrives and gives Toyman a frock belonging to Darci. A key falls out of the pocket revealing Darci's residence.
Clark arrives at Darci's apartment and finding no one is home, he sneaks in and searches the room. The room is strangely empty of any clues of her past. He then checks the refrigerator and finds that too is empty. Darci talks to Clark for a while, but a giant toy kangaroo arrives and hurls him off the balcony. The kangaroo then goes after Darci. Superman arrives and starts fighting the kangaroo. Though the kangaroo almost escapes with Darci, Superman manages to save her and defeats the robot. Darci, however, has left and Toyman has watched the whole thing. He vows to take care of Superman.
Back at her office, Lana Lang walks in on Darci, who is busy repairing a tear in her skin. She witnesses Darci pull off the piece of skin, revealing that she is, in truth, a robot. Lana confronts Darci and Darci reveals that she is based on a doll that was popular at one point in time. The Toyman wanted a companion and built her, but she proved to have too much free will and now wants to kill him. Darci attacks Lana after she finds her employer plans to turn her over to the police. After a brief fight, a fire breaks out and Lana is trapped inside. Darci runs off, leaving Lana to burn. Once again, Superman arrives in time to save her and manages to put out the fire. Through Lana, he learns of Darci's origin and her connection to Toyman.
Darci goes to Toyman's hideout and confronts him. She tries to kill him with a gun but she finds she can't. A failsafe device prevents her from attacking him and she is forced to run. However, she is captured and Toyman decides to make some "adjustments" on her.
Shortly after Darci's entry, Superman arrives. Toyman accuses Superman of wanting Darci for himself. Though Superman assures him this is not the case, Toyman traps him in an energy cage and has him attacked by an energy being called the Death Fist Ninja. At first, Superman is nearly defeated by the ninja, but he soon figures out the ninja's moves and manages to push it into the energy cage, thereby overloading its circuits.
Toyman flees the scene with Darci but she realizes she can destroy his toys, so she destroys the helicopter both she and Toyman are riding. The helicopter crashes into the ocean. Neither Toyman nor Darci can be found.
Later, a mysterious woman waits at a train station. A conductor offers to help her with her bag, but it's too heavy for him. However, after he leaves, the woman picks up the heavy bag with ease and leaves on the train.