To the moon! That's the plan, at least. Senku and the Kingdom of Science need to devise a means with which to go to the moon and deal with Why-Man. The first step is allying with the people of Treasure Island and enlisting their help with some new crafts.
This island turned out to be 
a literal treasure island!
!اتضح أنّ هذه الجزيرة جزيرة كنز بحقّ
Esta isla sí que es una isla del tesoro.
Esta isla sí que es una isla del tesoro.
Cet endroit était
Quest'isola
Esta ilha virou uma 
verdadeira ilha do tesouro!
Этот остров хранит настоящие сокровища!