The members of P.A.N.D.R.A. hijack a luxurious ocean liner and make of it their new base of operations after rescuing the captive espers imprisoned there. Some years later, the now teenagers Kaoru, Aoi and Shiho graduate from elementary school and soon after, they are sent on another mission wearing their new uniforms. Meanwhile, Yuri, a new student arrives at the girls' middle school, who is revealed to be the Phantom Daughter in disguise.