Kaseki's efforts to build the science vessel Perseus hit a roadblock when he realizes that it's impossible to get all the parts to fit in practice.

The team revives Kaseki to work on the drone. Meanwhile, Ginro is called to see the Master.

The morse code signal reading "WHY" saturates the airwaves too much for Ukyo to pinpoint a direction, so the Kingdom of Science works on a way to visualize the signal.

The team revives Kaseki to work on the drone. Meanwhile, Ginro is called to see the Master.

The morse code signal reading "WHY" saturates the airwaves too much for Ukyo to pinpoint a direction, so the Kingdom of Science works on a way to visualize the signal.

The team revives Kaseki to work on the drone. Meanwhile, Ginro is called to see the Master.

Senku, brings along a team to look for the Sagara Oil Fields. Meanwhile, Suika and Francois go truffle hunting.

Kohaku is forced to destroy Ryusui's statue to prove that she isn't a spy.

The Kingdom of Science will need rations to last them through their voyage to the other side of the world. But Senku, being no professional, burns all the bread he attempts to bake.

Kohaku is forced to destroy Ryusui's statue to prove that she isn't a spy.

The Kingdom of Science will need rations to last them through their voyage to the other side of the world. But Senku, being no professional, burns all the bread he attempts to bake.

Kohaku is forced to destroy Ryusui's statue to prove that she isn't a spy.

While continuing to use the hot air balloon to search for the oil, it's decided that Ishigami Village needs to take up agriculture to prevent future food shortages, as well as to produce preserved food for their upcoming sea voyage.

The Perseus crew are on their way to the treasure island, the birthplace of the Hundred Tales, where they hope to locate the treasure box left behind by the Soyuz crew.

With the petrification device in the Kingdom's hands, it's time to revive Tsukasa. But there's just one problem: the device is out of batteries.

Ruriko meets a baseball dog, Murata's wallet goes missing, and the team pumps themselves up for the playoffs.