Bakuretsu Tenshi: Infinity

Westland, New York in the 21st century witnessed one of these murders wherein an unscrupulous murderer used an unsharpened blade to strike out mercilessly against innocent individuals... A terrified girl witnessed one such murder whereby the knife turned its edge against her helplessness before turning it against herself causing further bloodshed... Ultimately the knife fell on top of her helplessness as well.

Meg returns with Joe to this town to mark Shirley's "birthday", having taken in three little children including Shirley before meeting Joe; orphans all, they decided that when they first met it should mark her "birthday". In Meg's past she took care of three little ones before Joe came along - including Shirley; these children eventually finding homes through Sam, an officer with strong moral principles who adopted all three children later and live happily today.

Meg and Joe aid a stranger who becomes injured, earning themselves a reward in return. With that reward money they purchase a present for Shirley using Sam as their agent; upon meeting up, however, they notice him acting suspiciously; upon further inquiry it transpires he claims Shirley has been assaulted and seriously injured by an unknown killer; Joe urges Meg in her grief: let's exact revenge against that murderer together." Joe then suggests to Meg: let's exact revenge by exacting revenge against their perpetrator.

However, an unscrupulous killer slowly approaches them from behind and begins focusing his cruel black eyes upon Meg and Joe... To add insult to injury, an ulterior plot soon descends upon them all as Meg Joe Sam and their town come under threat of destruction.