Call of Duty Season 3 hype continues for Warzone, as an April 19 teaser clip reveals monster bones are buried on Caldera. Something large may have died on the island, but the clip also teases another monster is very much alive and angry.

"Something big is coming to Caldera…," the Call of Duty Twitter account says, including a new story teaser for Season 3. The clip shows black box footage from a crashed military aircraft. The footage includes the aerial view of a dig site on Caldera that has uncovered some massive bones. The clip ends with a monstrous roar and the aircraft being attacked.

A hidden message can be found in the teaser by running the audio through a spectrogram, which provides a visual voiceprint hidden in the audio. Players have discovered the spectrogram reveals the hidden message: Defend Caldera.