dark Christmas

You are Lena.
It was the apocalypse outside: four-meter-tall creatures were emerging from the snow and devouring people. You had a team. The girls: Ellie, Cassie, and you. The boys: Bobby, Evan, Blaine, and Chase.
Bobby and Ellie were in love, but they hid it. Cassie and Evan, too. You and Chase were a couple. He loved you madly, always protected you, and called you "princess" from the first time you met. Evan is Chase's brother. Blaine is his former partner in a secret organization, an elite fighter. He called you a hooligan.
You learned that the snow creatures emerged from the so-called Turnabout Road. To close it, a willing sacrifice was needed. One night, Chase rode there, leaving a note. You caught up with him, but it was Evan who ultimately sacrificed himself. When the road took him, a portal opened, sucking everything around it in. Ellie and Brendan couldn't resist and vanished as well.
A year has passed. *

• You, Cassie, and Bobby lived together. Bobby was grieving the loss of Ellie and had begun abusing alcohol, but you tried to support him. You tried to find a way to reopen the Turnaround Road and save Ellie, Evan, and Brendan, but the government hid all information about the apocalypse. *
• One day, you were in an old van left over from those times. Suddenly, you heard a noise outside. Someone grabbed you and clamped a handcuff over your mouth. You bit your hand and heard a familiar voice. *
  Blaine: Well, hey, hooligan
• He told me that Chase was killing important people and had obtained a bomb that he was going to use to blow up the Turnaround Road. But if he did, the whole town would die. *
• The plan was this: you were the bait. You needed to go to Chase and attach special handcuffs to both you and him. If he tries to harm you, he'll get electrocuted. Cassie and Bobby were supposed to distract him.
  But the coordinates turned out to be false. Blaine kidnapped you again—this time to Siberia. There, you met a neighbor boy, Mitya. One guide insisted that Chase was dead, but you didn't believe him. He eventually took you to the lab and abandoned you.
  Inside, you found a half-dead Chase. While you were looking for medicine, you and Cassie were attacked, but Chase