Despite being a series of buildings, only one of the Cold Storage warehouses can be entered. Inside this warehouse, some of the floors are frozen over, resulting in ice skating puzzles. There are multiple Workers inside the warehouse who will battle the player. In the back of the warehouse is a container, where Zinzolin is encountered for the first time and later during the post-game.
In True Friends, Cheren revealed that he had later returned to the Cold Storage to learn more about Team Plasma's motives. At the Cold Storage, he had met Zinzolin, who had taken him to see how N awakened Zekrom. Upon seeing this, Cheren had chosen to start following Team Plasma's ideals.
The Cold Storage was revealed to have been abandoned while the Pokémon World Tournament construction had begun nearby. In Angry Boy, Colress confronted Zinzolin inside the building, asking him to tell him what he knew about Kyurem, which he had been searching for in disregard of Ghetsis's orders. Colress eventually figured out that Zinzolin had in fact managed to find and capture Kyurem, which was confirmed by Zinzolin himself, revealing that Kyurem was with them in the Cold Storage as they were speaking. As Zinzolin refused to hand over Kyurem to Colress, the two started battling, with Colress eventually defeating Zinzolin with Thundurus and Landorus.
The noises of the battle caught the attention of Blake, who had come through the Relic Passage, following the cold air produced by Kyurem. Noticing Blake, Colress used the Reveal Glass to transform Thundurus and Landorus into their Therian Formes and had them attack him. Per Ghetsis's orders, he then used the Colress Machine to take control of Kyurem and had it board the Plasma Frigate. However, Blake was able to sneak aboard the flying ship with Kelden, leaving his other Pokémon behind to battle the Legendary Pokémon and the Shadow Triad. After defeating Blake's Pokémon in PS541, the Shadow Triad departed to rendezvous with the Plasma Frigate in Undella Town.