In a male-dominated world devoid of women, men have created androids modeled after females, dubbed "Marionettes," designed to serve and with limited interactions. However, everything changes when a destitute boy, Otaru Mamiya, stumbles upon Lime, a Saber model Marionette infused with emotions. As Otaru awakens two more Saber Marionettes, his mundane existence transforms into an extraordinary adventure filled with extravagant and voluptuous companions.