In Osaka, Japan, Heiji, Atem, and Kazuha arrived at the police station. Atem decides to help Hattori Heiji to investigate the mysteries of the Twilight Crystal.
Flashback
It happened two days ago after Atem's arrival. Heiji receives a phone call from his father.
Heiji: What? A Twilight Crystal? You want me to investigate it? Along with Kazuha? I see... OK! We'll help you out. [Then he turns off his cellphone]
Atem: I'll help too!
Heiji: Eh? Are you sure?
Atem: Yes!
Ran: What about Conan and Agasa?
Kogoro: Don't worry! We'll look for them.
Kazuha: Alright! Just promise that you call us that you found them!
End Flashback
At the police station...
Heizo: Ah! Heiji! I see you brought along someone else. Who's this?
Heiji: That's Motou Yugi! He's new here. I'm pretty sure he's useful.
Heizo: What's that you're carrying young man? [As he points at Atem's duel disk]
Kazuha: That's a new accessory that he design!
Atem: Don't worry about it. You said something about a Twilight Crystal, correct?
Heizo: That's why I want Heiji to find it. We think that Kaito Kid is stealing all the jewelries, just to find it if it's really is the Twilight Crystal.
Kazuha: EH? Doesn't he know what the Twilight Crystal looks like? Can't he just-
Atem: Because the Twilight Crystal takes form of any gem or jewelry in the world.
Kazuha and Heiji: HUH?
Atem: I've heard about it along time ago. [As he remembers the stone tablet about him facing Seto.] ( I could have sworn I seen a sharp object along side with the ancient scriptures. That must be a Twilight Crystal! It must have a connection between with me and Kaiba!)
Suddenly... Heiji receives another phonecall.
Heiji: Excuse me a sec... Hello? Hey! Kogoro-san! Conan and Agasa has returned! Really! What? This time Ran has disappeared? OK! Got it! [Then he turns off his cell]
Kazuha: Ran has disappeared as well?
Heiji: Yeah! Just what's going on over there?
Heizo: Well, you have to help your friends first, alright?
Atem: No! Our top priority is to find the Twilight Crystal.
Heiji: What?
Atem: The Twilight Crystal is one of the most dangerous objects. We have to find it no matter what! I'll explain everything!