There is a rumor going around about buildings disappearing on an urban legend website. Hiro and the gang go to investigate a certain cave with people from the forum. As they go deeper into the cave, terrible things happen…
They're all going to perish!
!سيهلكون جميعاً
Sie werden alle vergehen.
Todos perecerán.
Todos pereceréis.
Ils finiront tous par mourir.
Morirete tutti!
Todos eles vão perecer.
Они же исчезнут.