Mr. X has his mind set on obtaining Mika's psychic serum, but he has the wrong twin in captivity. After an explosive realization, Mr. X sets his sights on getting both the twins, but now Mason's turned against him. Things get uglier as Mr. X captures the twins' loved ones, and informs Mika and Toni that he will kill them if they don't turn themselves over to him.
— Description from Comic Vine community (comicvine.gamespot.com).