In the first scene Mikuni is wearing a maid outfit, she gets captured by scientists who bind her, gag her, play with her pussy with a magic wand and turn her into a zombie.
In the second scene, Mikuni is sleeping in a bed a guy comes and touches her in her sleep, rubbing his dick against her tits and body.
In the third scene, she is having sex with a guy in a prison cell as she begins to turn into a zombie. She blows him and they fuck (cowgirl, reverse cowgirl).
In the final scene, she is laying on a bed and a scientists comes and fucks her (missionary, doggy).