Special Operations/Sunder4321

Special Operations, aka Spec Ops are limited time challenges where players can earn unique Boss items through battle and even a new hero/s by completing specified objectives. Once the time for the mission has expired, the hero is put back in the vault. Special Operations can be accessed from the Flight Deck or the Mission screen.

While normal Missions require 10 energy to access battles, Spec Ops also require Unstable Iso-8 to do the events. It costs Unstable Iso-8 for battles and for Deploy missions. It can be obtained through Gifts from friends, dropped in battles or deploys, or purchased from the  store. However, once the mission is expired that flavor of Unstable Iso-8 goes away with it.

WARNING: Spoilers!

Chapter 1 - Secret Invasion
On the Skrulls' planet, Queen Veranke orchestrated an invasion on Earth. They knew that the heroes were the only thing stopping them from doing so, so they decided to infiltrate them first. Veranke had to undergo an Infiltration Ritual to be able to mimic the powers, personality, and memories of Jessica Drew, aka Spider-Woman. The infiltration started with the skrull Siri, who impersonated as Elektra. Siri was able to capture Elektra and take her place. Siri then led The Hand.

While that happened, Daredevil sent Maya Lopez aka Echo on an infiltration mission with The Hand. When she went there, she was infected with a drug by "Elektra" that made Echo do her commands. The New Avengers were able to save her, and the drug was removed. Siri then showed itself to the New Avengers, and Echo was able to defeat it. The Avengers had an argument on what to do with the body. Spider-Woman wanted to give the body to Tony Stark, to see what it was doing there with The Hand. Though Wolverine didn't want to give the body to Stark, assuming that Stark was also a Skrull. Spider-Woman stole the body and chased it to Tony.