“I’ll take you to the northern city!”

In a world where winter never ends, Dawn is a girl who runs errands in an alley town. The driving force behind Dawn's survival is only because of her promise with the delivery person, Heather. Let’s go to ‘Northern City’, a place of hope where everything happens! Dawn, who meets Heather again, thinks there is only happiness left in the future, but things start to get more and more strange...