Angelica, also known as Ann, awakens unconscious within a mysterious spacecraft that crashes onto Planet Sharaku during its 200th-anniversary celebrations. Suffering complete amnesia, she recalls nothing beyond her name. This memory loss drives Kanipan's efforts to help her recover her past. The pendant device she carried while escaping the Planetary Management Committee unlocks significant technological capabilities. This pendant enables Kanipan's Interface Robot, Kid, to integrate new parts and undergo instantaneous transformations, proving vital during critical moments in their journey.

As fragments of Angelica's memory resurface, they inadvertently expose an existential threat facing Planet Sharaku. Her forgotten past holds the key to this looming planetary danger, making her central to unraveling the mystery. Her presence significantly alters interpersonal dynamics, particularly impacting Kanipan's relationships. Kanipan develops a romantic attraction to her, creating tension with Milk, who harbors longstanding feelings for him. Angelica's deepening connection with Kanipan culminates at the wedding of Nuts and Kirsch. Unbeknownst to Kanipan, this event also serves as his own marriage ceremony to Angelica. Her understanding is revealed when she administers the wedding oath and kisses him, solidifying their union.

Following the resolution of the planetary crisis, Angelica departs Planet Sharaku aboard a spacecraft with Kanipan and Kid. Milk, Igor, and Ravioli secretly join them, marking the next phase of their journey together.