The Kari of Dawn

Summary
As Koshiro realizes that the thrusters on the Soyuz spacecraft attached to the ISS could divert it from the collision with the satellites, Taichi, Sora, and Takeru continue until they reach a crater holding one of the dark crystals of Millenniummon, where they encounter SkullKnightmon and Hikari. Under the orders of the Vademon followers of Millenniummon, SkullKnightmon resonates with Hikari and evolves once more into DarkKnightmon. Taichi, Sora, and Takeru try to save Hikari, but DarkKnightmon has his steed hold them off until he absorbs Hikari into his body, beginning the ritual to revive Millenniummon. Taichi and MetalGreymon move to save Hikari, while within DarkKnightmon, Hikari sees a light and heads towards it. Sora and Garudamon defeat DarkKnightmon's steed. Refusing to lose his little sister, Taichi and MetalGreymon move to save her, while the light Hikari is trying to reach is revealed to be Tailmon. Once she saves Tailmon, she calls out to Taichi, allowing MetalGreymon to evolve into WarGreymon, breach DarkKnightmon, save Hikari and Tailmon, and destroy DarkKnightmon as well, breaking the ritual to revive Millenniummon before it could succeed, though the Vademon agree to wait for the next opportunity to revive Millenniummon. Afterwards, Tailmon properly introduces herself to Sora and Takeru, and with half the Chosen Children reunited, they turn their attention to recovering the others, stopping Millenniummon's revival, and the collision of the satellites and ISS.