Under the radiant Japanese sun, a jubilant young girl dashes into Wonder Land, the enchanting amusement park she longed for. Welcoming her at the gate is the lively 'Mummy Man,' offering her the freedom to indulge in any amusement she desires. Together, they venture into a thrilling exploration of the park, with bystanders viewing the Mummy Man as a benevolent character frolicking with the girl. Yet, as suspicions rise among the park's officials, a sense of unease looms in the air.