The Perseus arrives at the treasure island. A recon squad consisting of Senku, Soyuz, Kohaku, and Gen set off to locate the platinum and make contact with the islanders. Ukyo later discovers something on the seafloor and send Ginro to investigate.
Science's own suppression device: 
chloroacetone.
.جهاز قمع العلم: الكلوروأسيتون
Niederschlagung durch
Wissenschaft mit Chloraceton.
L’arme de répression scientifique,
la chloroacétone !
O dispositivo de supressão 
da ciência: cloroacetona!