Dr. Stone episode 4 revealed that besides Senku, Taiju, Yuzuriha, and Tsukasa, there are other people who are currently living in the vicinity. At the end of the previous episode, Tsukasa can be seen striking Senku with his stone sword. In Dr. Stone episode 5, the story on how Senku’s revival and survival in the stone world happened.
Taiju will arrive to see Senku unconscious in the ground. Tsukasa will worry that because of Senku’s death, Taiju will be enraged will attack him, which means that he would need to kill both Taiju and Yuzuriha. With his strength, Taiju lifted a rock nearby him and threw it upward towards Tsukasa. With this distraction, Yuzuriha ran and threw the remaining gunpowder to Tsukasa.
Swiftly reacting to the attack, Tsukasa kicked the jar, which made the gunpowder scatter around. In the meantime, the rock that Taiju hurled upward landed in the scattered gunpowder, creating a great explosion. With the smoke from the explosion, Taiju (carrying Senku) and Yuzuriha managed to escape. Because of the sudden downpour, Tsukasa was not able to find them.
Yuzuriha and Taiju will try to wake up Senku, which will be a futile attempt since he is unconscious. Inside his mind, Senku is relieving how he became de-petrified. Yuzuriha suddenly remembers how Senku goaded Tsukasa to snap his neck instead of killing him by other means. With this observation, they will discover that there’s still some petrified stone in Senku’s neck, which probably saved him from Tsukasa’s attack. With the help of the de-petrification formula, Senku will be able to wake up.
Dr. Stone episode 5 will be the last time that we’ll see Taiju and Yuzuriha for a while. With the sudden progress of the story, Senku will need both to join Tsukasa’s empire as spies. Meanwhile, will Senku succeed in firing out the other humans? We’ll find out in the future episodes of the series.