While the Chase enters the Bridge, they are tasked with pushing back a demon named Gardosen back to Hell, as he is attempting to cross to the real world with the help of Kaze'aze and assault Bermesiah again. A Dark Voice (presumably Gardosen) appears and demands his shadowy forces to "give them a taste of Hell."
The Chase confront Gardosen, who taunts the group. Ultimately, he is defeated and sent back to where he came from.
Elesis: Is this Hell Bridge, the pathway to Hell? Arme: Wh-What's this? What is this ominous feeling? Just standing here, I can feel fear spreading throughout my body... Lire: How can this be? There's a strong taste of death and magic lingering in the air. Elesis: It must be because of Gardosen. Kaze'aze is trying to summon that ruler of Hell through this site. Gardosen will have crossed over to this side any moment now. We need to seal off this place before he does! Voice: Where are you?! Grand Chase! You are certainly fearless for coming here! Arme: How...how did you know we were here? Lire: The rule of Hell certainly does...stand out... Elesis: ... Voice: Soldiers, listen up! The Grand Chase has arrived to stop us! They will be the first to be sacrificed for the domination of Bermesiah. Fight! Die! Jin: Are we too late? Ryan: No! It's not too late! Arme: ... Elesis: Yes, Ryan's right. Gardosen hasn't completely materialized over here just yet. Lire: That's right. If Gardosen's summoning had been complete this place would've erupted in flames already. Arme: ...Yes! It's not too late! Voice: Get them, my minions! Give them a taste of Hell! Jin: Should we stall for time? Attacking them quickly would be best. Ryan: You think so too? Arme: Yup! Lire: Yes! Elesis: All right then! This is an all-out ambush!
Elesis: *Phew!* Gardosen! You're the only one left! Gardosen: Pathetic little ones. How foolish that you rejoice over slaying a few undead soldiers. It's amazing that you even made it this far. Arme: Hmph! You should be nervous, Gardosen! We're sending you straight back to Hell! Gardosen: Well! Your foolish confidence will bring you to your end today. The world shall soon be stained in blood! Ryan: Oh no, you'll be going first! Gardosen: Kkkuhooooo~! I will stain the world with your blood! Ronan: He's attacking! Get ready!
Back during the days of the original PC game, it was theorized that Hell Bridge houses a Dimensional Portal and has some ties with the Underworld. This is proven to be true in the sequel, as the Hell Bridge was the old method of connection between the Underworld and Aernas before the Underworld Trains were commissioned.