In midst of a raging war, Black Widow, aka Natasha Romanov walks up the CMS machine containing the Tesseract that powers the portal that allows Lokis forces in form of Chitauri and gigantic Leviathans to invade earth. Looking over the rooftop of the Stark Tower, she finds Professor Selvig, slumped down, weakened, looking desperately at her, while explaining. ''The Tesseract's energy is firing towards the portal, gaining in strength, at the surge of energy moving through the sky.''