Seria Morino, a timid 14-year-old prone to blushing in social situations, finds her world reshaped after witnessing Izumi’s electrifying performance at the Super Material Theater. This sparks her resolve to join the Alice in Theater troupe, where she cultivates her acting talents, shedding her insecurities to emerge as a bold, respected performer. Her journey unfolds against the aftermath of an enigmatic global catastrophe that erased entire cities five years earlier. Amid the fractured recovery, Seria encounters a theater group wielding cutting-edge 3D holograms via the Theatrical Material System. A shadowy woman’s invitation pulls her into Alice in Theater, propelling her toward revelations about the vanished cities, her own identity, and her uncanny gift for flawlessly mirroring others’ acting techniques—a skill pivotal to her evolution.

Within the troupe, Seria navigates shifting bonds: idolizing Izumi before clashing with her over unspoken rivalries, while her connection to mentor Airi Kagami blurs into tentative romance, strained by escalating sci-fi crises. Defying norms, she humanizes Doll, an unfeeling android rehearsal partner, dubbing her “Alice” and forging a bond that defies logic. The narrative climaxes with a timeline reset through sci-fi mechanisms, erasing the troupe’s existence but sparing her family from the past disaster. Though her ties to Airi and Izumi linger unresolved, Seria’s arc crystallizes into resilience and emotional grit.

Her design—brown hair, blue eyes, a bright yellow headband, and a black-and-red uniform—echoes her duality of innocence and determination. The plush “Alice” she treasures symbolizes her tender heart, a counterpoint to her disciplined artistry. The OVA *Alice in Deadly School* (“Episode 0”) anchors the main story’s context without delving into her origins, preserving the mystery of her path from reticent girl to audacious actress.