Yota Moteuchi, a high school student, struggles with unrequited love for his classmate Moemi Hayakawa. After being rejected, he rents a mysterious adult video from a small, obscure shop. The video features a girl named Ai Amano, who unexpectedly comes to life from the screen and enters Yota’s world. Ai is a "Video Girl," a virtual companion designed to comfort lonely individuals, but due to a malfunction in the tape, she gains a more human-like personality and physical presence. Unlike her intended role, Ai becomes emotionally complex and deeply involved in Yota’s life.

As Yota and Ai grow closer, their relationship becomes complicated by Yota’s lingering feelings for Moemi and Ai’s own evolving emotions. Moemi, who initially rejected Yota, begins to show interest in him after witnessing his interactions with Ai. This creates a love triangle that intensifies as Ai’s time in the real world becomes uncertain due to her nature as a temporary, artificial being. The story explores themes of love, identity, and the boundaries between reality and fantasy, as Yota grapples with his feelings for both Ai and Moemi.

The narrative delves into the emotional struggles of the characters, particularly Ai’s internal conflict as she develops genuine human emotions despite her programmed purpose. Supporting characters, such as Yota’s friend Takashi Niimai and Moemi’s sister Nanami, add depth to the story, highlighting the complexities of relationships and personal growth. The series balances moments of humor and lightheartedness with poignant reflections on love and existence, culminating in a bittersweet exploration of the characters’ connections and the transient nature of Ai’s presence in Yota’s life.