Danny leads the Immortal Weapons to the canyon where Shou-Lao still has a portal open. "This way," he heards them through one by one but before he enters, he takes a look back at the massive lava ocean and the cliff where a mountain once stood, "You did great, Yu-Ti." He enters the gateway and once there, the entrance crumbles into rock, sealing it shut. On Earth, Danny exits through a similar mountainside. He looks back just in time to see the entrance crumble in the same manner, removing any trace of the portal as the face of the mountain replaces it.
The Immortal Weapons stand by, looking over the mountainside of China. A semi-built train station is not far along with construction vehicles and building material. The sun is setting in the distance. They enter the station area, spotting the Maglev train rail. "Where are we?," Dog Brother #1 asks. Danny follows the rail to a flimsy wooden barrier and beyond that, the rest of the mountain, standing tall and untouched by modern construction workers. He looks up at the top of the mountain and there, he sees a brief image of K'un L'un.
"This is K'un L'un," he tells them. "And what's that over there?," Fat Cobra points into the distance. In the other direction, the rail runs along the plateau and onto a bridge, which connects to the next mountain. The rail wraps around and across the valley, Danny sees the Maglev train making its way straight for them. Hua turns from the train and to the rail leading up to the side of K'un L'un, "It's going to crash into the side of the mountain."
"Excuse me," Danny tells them as he removes his mask, "I got a train to catch."
Danny steps up to the rail and stoops down, placing a hand over it. The others stand off to the side and watch curiously. "This train runs on an electromagnetic current," Danny tells them, "I can allow my chi energy to flow into that current. Get swept up in its undertow. I can destroy it before it reaches K'un L'un Mountain." He raises his hand and ignites the Iron Fist. "Wish me luck," he calls out to them. He brings his fist down, smashing the rail into the ground, but instead of exploding, the energy is channeled into it, sending a bright ball of golden energy down it length. As it runs along the ground, it twists the rail in one place, goes farther, then yanks another section out of the ground, popping a bolt into the air in the process, then it makes it way to the train. It passes over the bridge, streams of blue and gold energy following it under the train itself. There's an explosion of chi energy and streams of electromagnetic lightning strikes. The railing curls and chunks of rock are kicked up, which ramps the lead car into the air with the rest of the train following. The second car ends up striking the back of the first, jostling it enough that both cars explode in a ball of fire. What is left of the front of the train and is sent toward the bridge as a flaming fireball. The ball of twisted, burning metal hits a beam and bounces off into the ravine below. The rest of the train slides off the rail and hits the ledge just before the rest explode in a chain effect, one a split second before the next. Inside, a massive fireball is hurled through the inside of the cars as it falls on its side. The mountainside is blasted away, sending chunks of rocks and a cloud of smoke and dust off the side. It collapses into a rockslide, pulling what is left of the rail down with it. The bridge is ripped away and tumbles after that and a large cloud blows past the Immortal Weapons as the ground shakes and they lose their footing. Soon, the cloud envelopes them completely along with a dying echo. As the dust clears, they find smoke billowing from the ruins; the ravine now filled with broken slabs of stone and buried, twisted metal. The partially built station remains and the Immortal Weapons pick themselves off the ground. K'un L'un looms overhead, untouched.
"It's over," Danny says with finality as he gazes at the edge of the cliff.
"It's gonna be a long climb," Dog Brother #1 groans as he notices how high up they are.
Danny slaps him on the back, "Don't worry, I've done this before."
It's night by the time they make it down from the mountain. They trek through the foot and stand in silence once they reach grass. Danny gazes into the distance: K'un L'un remains. He smiles.
"We should go back to the cult temple," Green Mist tells him, "We must destroy the gateway once and for all."
"So what happens after that?," Danny asks, "Your mission was to find the Eighth City. You did it. It'll be decades before you get to go home, though."
"I'm sure we can find new adventures, brother," Fat Cobra says with a smile.
"I suppose we'll have to endure each other," Dog Brother says with a chuckle, which elicits a playful shove from Fat Cobra.
"Thank you for everything, Daniel Rand," Hua bows to him and he returns the bow.
Bride of Nine Spiders sneaks in and gives him a kiss on his cheek, "It's not everyday the Bride of Nine Spiders gives a kiss," she states with a half-smile.
"Farewell, Daniel Rand," Green Mist bows to him and they turn to leave.