In a zombie-ravaged world, Yuta Okkotsu gets separated from his group during a supply run and encounters Maki Zenin, a lone survivor hardened by constant fighting. Their first meeting is tense and cautious, with Maki staying guarded and Yuta approaching calmly instead of using force. Though neither fully trusts the other, the encounter becomes a quiet turning point, hinting that survival might not have to be completely solitary.