At the Sanzu Harbor, Hachirou waited for his next goods train to be loaded. That was when Ten Yen showed up.
"Hello, Ten Yen!" Hachirou called out.
"Hello, Hachirou. Fancy seeing you here, what brought you out here?" Ten Yen replied.
"Just a goods train I have to bring to Mayohiga."
"Did you hear the news?" asked Ten Yen.
"What news?"
"We might be privatized."
"Privatized? What does that mean?" asked Hachirou.
"It means we won't be owned by the harbor and Kappa Valley anymore."
Haruka and Haruki were in the harbor, they had just finished shunting Hachirou's trucks.
"Hey Hachirou!" said Haruka.
"Your train's ready!" finished Haruki.
"I must leave. See you when I next come to the harbor." said Hachirou.
"Bye, Hachirou."
That night, the Sanzu tugs were fast asleep, when suddenly, an explosion was heard. Ten Yen's eyes open widely. The other tugs were slow to wake up.
"What was that?" yawned Mob Cap, the railway tug.
"I don't know, but I'll find out." said Ten Yen, and he got his engine going.
He searched up and down the harbor, but could find no evidence of an explosion. He heading back to where he was sleeping, until he heard a scream. Ten Yen turned around and that one of the cranes were swaying. The crane lurched and fell into the water.
"I must tell the others." Ten Yen said to himself.
When he did manage to convince the other tugboats about to see the fallen crane, when they came with Ten Yen, he saw that the crane that had fallen earlier had magically erected itself back into place.
"But! But! But the crane fell!" said Ten Yen in disbelief.
"Ten Yen." said Mob Cap, "You really are pulling our rope."
"Yeah, you must be crazy." said Bushido.
"Ten Yen, you had a busy day. Get some rest." said Kanabo.
"Right, I'm probably just tired." replied a disappointed Ten Yen.
The next morning, Ahiru had stopped by with a passenger train, a passenger had requested to stop at the harbor.
"Good morning, Ten Yen. Got anymore details about that privatization of yours?" said Ahiru.
"No. But last night I saw that crane other there fall down." replied Ten Yen.
Ahiru looked around at one of the cranes, "You mean Big Daisuke?"
"Yes." replied Ten Yen.
"Didn't he fall into the water when the old harbor blew up?"
"Yes." suddenly, Ten Yen knew what was going on.
"That must be the ghost of Big Daisuke's operator!"
"We had a ghost a few days ago, the Hakurei shrine maiden looked all pale and she had a nervous breakdown."
But before Ahiru could continue, Ten Yen went off to find some work, he had a plan to hatch.
The following night, Ahiru heard the explosion again. The other tugboats woke up too. But Ten Yen ran off, whistling and making noise.
"Ten Yen! What are you possibly doing at this time of night?" asked Mob Cap.
"Follow me!" replied Ten Yen.
"What could Ten Yen be getting at?" asked Kanabo.
The three tugs soon followed Ten Yen and they came up to Big Daisuke. The crane began to sway and lurch.
"What's going on?!" said a scared Bushido.
The scream came again and soon the crane fell into the water with a great big splash.
"I told you the crane fell!" said Ten Yen.
"I s-see your point." said Mob Cap.
For the next few days, the ghost of Big Daisuke's old operator haunted the harbor. Sometime, a crate or a barrel would explode. Luckily the explosions didn't start any fires, just the contents would blast apart. The Moriya Shrine's miko, Sanae Kochiya came to the harbor to see what the weird occurrences were about. She saw the crane sway lightly and see flew up to the cab were the operator would sit and work the crane.
"Finally, an incident that I can solve. By myself!" she thought importantly.
Sanae heard the explosion and the crane began to sway more violently. She soon heard a scream come from inside of the crane. She looked inside and saw that there was no one inside. But the crane soon fell down. Because of where Sanae had been floating, the crane slammed into her and Big Daisuke took Sanae with him down into the river. It took a while for Sanae to get her bearings and swam up to the surface.
"Sanae!" cried Ten Yen.
He went over to where Sanae had been treading and dropped a rope for her. She climbed it and went over onto Ten Yen's deck.
"See! This is the ghost that been haunting the whole harbor!" said Ten Yen.
"I see. I will go back to my shrine now. I'll tell Kanako and Suwako what we can do, but it'll mean closing the harbor." replied Sanae.
"I think I have a better idea."
The next day, a salvaging operation was held. Several ships with divers went down to the bottom of the river, the part where Big Daisuke had once fallen onto. They soon found a largely decomposed body, covered in ragged clothing. The body was loaded into a casket and was soon shipped to its final resting rest place.
That night, Ten Yen went out to the harbor and saw a spirit. The spirit resembled the operator who drowned inside of Big Daisuke. The spirit waited for Komachi to arrive with her ferry. When the spirit payed his fare, he climbed into the boat and Komachi started rowing. Ten Yen whistled at the spirit, the spirit looked back and waved at him. Ten Yen watched as the boat go out further and further into the Sanzu River.
After that, Big Daisuke is never seen falling down into the water and mysteriously reappearing back onto the dock and the explosion sounds were never heard again.