Roboute Guilliman didn't believed this, this must be a joke. Primaris returned from expedition, to infiltrate the source of the strange psychic signal. Primaris reported what the saw, but Guilliman still didn't believed. They said, that there were Mechanicus and space marines of unknown chapter, Guilliman thought that they were traitors, but primaris stated, that they were friendly. Librarians also stated, that this marines weren't touched by chaos and ruinous powers, but they also tell, that this marine's psyche was... Strange. Librarians felt, that this marines have a small presence in the warp, much more smaller then any marines they know, almost like tau. However, the most shocking information was about their leader. Primaris said, that this marines are being leaded by the second primarch, and they were called "Lightbringers". Roboute turned to other librarians, waiting for them to tell that they were lying, but they nodded. Primaris were telling truth. They described him, he was tall, like 10ft tall, wearing power armor and wielding storm bolter and power sword. His face was behind the respirator-like mask. Roboute was confused about information, that space marines of the second primarch didn't follow the codex astartes, but understand that this legion was lost for ten millenia and they couldn't know about codex.

Lord commander was in deep thoughts. If this man is truly one of his brother... Then he must act as quickly as possible. One primarch is good, but two of them is better. He gathered imperial fists and gave them level one directive - pick up the second primarch. The imperial fists fleet contains:

-Two battle barges MK-2.

-Three strike cruisers.

-Four escort ships "Nova"

Roboute watched, as imperial fists entered the warp and disappeared from vision. Now he need to wait. He can't wait to greet his long lost and unknown brother, maybe he will help Roboute in changing the Imperium to it's former self ? Lead the armies ? Oh, Roboute is very excited. (No homo).

*Back to Jaune*

Three thunderhawks begins to unload marines in the forest, near the Solis. Mournival ordered to check this surroundings and find the unknown grimm. Grimm was huge, 40 feet tall. And this is one and only description of the monster, they need to be cautious. Troops entered the forest and begins to move, searching for this monster. First thirty minutes didn't show anything, but later they begins to hear strange noises, seemingly coming from everywhere. Three squads of marines move in circle formation, back to back. One of marines were watching forest space, waiting for something to come, but his eyes met strange sight. Every tree were healthy with green leaves, but this tree were more brownish and didn't have any leaves. And this tree have a very strange trunk... OF FUCK!!!

Marines noticed as well and started to fire their bolters. This was not a tree, this was monster with it's side, turned to them. Monster begin to move, after bolter shells started to hit him. He grabbed one of the marines with his long arm. Marine was screaming in rage, and try to free himself with the knife, stabbing monster's palm. Before marine could do any damage, monster yeets him in the distance. Marine crashed through the many trees and landed. This action angered the rest of the marines and they begins to burn monster with flamers.

The squad's commander called someone, as others trying to fight this thing off, dodging it's attacks, and firing bolters.

"Spear, this is Gamma 2-1, call sign, adjust fire, over"

"Grid Bamboo 6 3 1 9 6 4, over"

Came a response. He continued.

"Huge grimm in the forest - Danger close, request artillery strike for affect, High angle, on my mark. Request time of flight, over"

Spear said:

"Gamma 2-1, this is Spear, artillery strike for affect, TOF-21 seconds. 7 shells out. Shot-over"

Commander answered:

"Spear, this is Gamma 2, shot-out"

He yelled for his brothers to get to cover. They scattered around, getting in cover as first artillery shells landed and blow off.. Monster roared in pain as his leg was teared off. Six more shells landed near the monster. Monster collapsed on the ground dead and commander said:

"Splash out, target destroyed. Mission accomplished"

He and his brothers exited the covers. They looked at the dead body of monster and saw, that it's head was in the shape of two white sirens, with classic, for grimm, red lines They begins to ran to help their wounded brother. They found him on the ground, groaning in pain. They called thunderhawks and loaded wounded aboard, they were coming home, and with the story to tell.