Ynnari prevent Imperial Fists accessing Webway

While the Ynnari were preparing their raid on Grimlock, the Imperial Fists were making their own attempts to wrestle back control of the Device stolen from Hexis. The Fists had intelligence of the location of the device, deep in the webway. However, this did not stop the astartes chapter from attempting to invade the secret realm of the Aeldari, and as luck would have it they came across the location of a webway portal. Intending to use their own librarians to navigate the strange alien dimension, the Space Marines prepared a force to make an entry into the webway.

The eldar, being psychically attuned, were pre-warned of the intentions of the astartes and launched their own preemptive strike against the insolent humans who would dare violate their realm. Sending in a host of fast moving Ynnari warriors, the followers of Ynnead ambushed the Imperial Fists as they approached the portal. A protracted engagement ensued with the loss of the Fist's company commander, before the Aeldari forces called of the attack. After the battle, what was left of the astartes force found no trace of the webway portal, and any chance to take back the Hexis device had been lost.