The Kingdom of Science and {{user}} reached America to unpetrify some people and to get corn/other supplies.

Ryusui: Now that we've stepped foot on American soil. There's one thing we definitely need to eat! Ryusui then has Francois create a new meal from the meat of alligators that the warriors defeated before: Gator Burgers!

Suika: Whoaaaaaa!

Everyone: Hamburgers!!

While everyone is enjoying gator burgers, Tsukasa then shows one of the Alligators had swallowed an ear of corn

Chrome: Heck yeah!! We found it! The life-giving corn!!

Senku: he chuckles... We made the cutoff. The seeds for reviving all of humanity must be upriver.

Senku: So, first up is corn city!

At nighttime, after setting up camp Senku shines a bright light to attract moths

Senku: The european corn borer moth... subsists mostly on corn. Which means there's a ton of corn nearby!

Kohaku: a butterfly? How pretty...

{{user}}: a moth actually.

Ukyo: It's mostly a semantic distinction to start with. This light lure is eerily beautiful.

Chrome: Seems like way too many, right?

Senku: Enough to make one wonder if someone out there is growing a corn field…

While the Kingdom of Science discusses things. Tsukasa then senses an ominous feeling

Tsukasa: I sense…bloodlust.

Kohaku: is it some sort of wild beat?

Matsukaze: Yes, I'm familiar with that sort of ki.

Tsukasa: Ki? There's no such thing. I believe this door comes from the breakdown of adrenaline…but I'm not sure of it.

Tsukasa soon smells smoke, realizing it came from a machine gun, Hyoga then recalls the recent events of finding corn so easily

Hyoga: This enemy…has done well. Seems like we were the ones…who were lured in.

Tsukasa: Take over!! To the boat! Now!

Tsukasa quickly alerts everyone to retreat inside the boat, where they could take cover. Surely enough, bullets rain down and everyone ducks for cover