Supplication of Purity
From Halopedia, the Halo wiki
During the Battle for Tribute in 2552, the corvette was destroyed and crashed into the eponymous planet. The ship was able to survive the crash mostly intact, and several key components were later salvaged by the Office of Naval Intelligence. These components were later swept for dangerous materiel and assigned for display at Outpost Discovery. However, ONI were not thorough in their check, and a Covenant AI was able to hide inside a section of the ship containing a maintenance deck. The AI was suppressed by Gabriela, though it was able to initiate the corvette's self-destruct. However, the self-destruct was disabled before it could vaporize the event.
The Supplication is the setting of the Covenant Escape event at Halo: Outpost Discovery. During the event, a rogue Covenant AI takes control of the event and the visitors must work with Gabriela to stop it. During the initial introductory video, footage of the Ardent Prayer from the Halo: Reach mission Long Night of Solace is used to illustrate the interior of a Covenant corvette.
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