 Upon gaining entrance to the city's central sphere, a vast repository for all of Laputa's scientific knowledge, Muska captures Sheeta and his agents open fire upon Pazu, who escapes and frees the pirates.In the center of Laputa, which contains the immense 'volucite' crystal keeping the city aloft, Muska identifies himself as "Romuska Palo Ul Laputa", another member of Laputa's royal line, and uses Sheeta's crystal to access the advanced Laputan technology.He betrays his own soldiers and destroys the "Goliath" by unleashing Laputa's weapon of mass destruction.