Fathom vol. 2 primarily focuses on the developments between the American government and the Blue. Volume 1 revealed that Admiral Maylander knew of the Blue's presence, and this series sees him take action against the underwater race. He does so by a sneak attack on the Blue city of Saba. Aspen, kidnapped by the Black, meets her father, Rahger, and learns that she is also part of the Black.collects #2 & 3