In their mission to sever the enemy's lifeline, Baldo and Lau investigate a veterans' sanatorium--but their opinions on how to handle the situation cause them to clash! Meanwhile, Finny and Snake visit a newly established orphanage to the east, where Snake is reunited with a person he never thought he'd see again...
Much to Lau's disdain, Baldo offers to help chief nurse Ada drive out the Aurora Society for the good of the sanatorium. But as they hatch a daring plan to thwart its next shipment, Baldo and Lau meet their match when a sinister, deadly foe threatens to bring about their end. Meanwhile, under Sebastian's orders, Finny and Snake arrive at the third blood-collection site--F.O.L. Orphanage, where a familiar face awaits them...