In October 2016, a day before the release of issue #10, it was reported that "A-Force" was "effectively cancelled" after no new issues were listed among Marvel's November, December, or January solicitations. The report came despite Thompson's intentions to continue the series after "Civil War II" with a storyline that involved an "unspecified A-lister". Sales of "A-Force" had fallen by 79% since its debut with issue #1 selling 114,528 copies and issue #9 selling 23,484 copies. However in a letter written to the fans in the back pages of "A-Force #10", Thompson described it as "short hiatus" followed by an editorial note disclaiming that "A-Force" will be back and that fans may speed up its return by emailing Marvel. A-Force, the defenders of the matriarchal Battleworld nation of Arcadia, responds to a megalodon attack while on routine patrol. During the attack, America Chavez throws the shark across the Shield, the wall that separates their borders, thus breaking the laws of God Emperor Doom and is subsequently arrested by Doom's enforcers, the Thor Corps. Despite appeals from Arcadia's baroness She-Hulk Chavez is sentenced to spend the rest of her life on the wall. In response, She-Hulk tasks the Sub-Mariners - Namor, Namorita, and Namora - to find the source of the megalodon attack. Meanwhile, Nico Minoru, lamenting the loss of Chavez, comes across a mysterious figure that fell out of the sky. The Sub-Mariners discover a strange portal in the ocean's depths but it implodes as they draw near. Later at the behest of female Loki, Minoru introduces her new friend to She-Hulk. When Medusa accuses the stranger, a sentient pocket universe, of creating the portal, a Sentinel falls from another portal and attacks the team. During the fight, the newcomer saves Dazzler and convinces She-Hulk that she is not the cause. After destroying the Sentinel, She-Hulk decides to travel through the still open portal and investigate the source herself. She-Hulk arrives in the Sentinel Territories and after a brief encounter with more Sentinels, she is chased back to Arcadia by the Thor Corps. The Thor Corps follow in pursuit, but Medusa manages to repel them back into the portal and is killed in the process. When the Thor Corps return, She-Hulk alerts the citizens of Arcadia that there is a traitor in their midst that is spreading discontent and vows to bring them to justice as she and other A-Forcers go into hiding inside the newcomer.