Tsukasa has learned about the cave where the nitric acid is collected. The race is on between Senku and Tsukasa to restore humanity in their respective visions.
The greatest invention in human history...
...أعظم ابتكار في تاريخ البشرية
Für die größte Erfindung
der Menschheitsgeschichte.
El mayor invento
en la historia de la humanidad.
El mayor invento
de la historia de la humanidad.
La plus grande invention
de l’humanité.
A maior invenção da 
história da humanidade...
Величайшее изобретение
в истории человечества...