Doomsday Escape All the Way North

The end of the world is coming and zombies break out. Where should I go, how should I respond, as an ordinary person, how should I survive in this dilapidated city full of zombies. Affected by the major earthquake and tsunami that occurred in XXXX, the cores of Units 1 to 3 of the Daiichi Nuclear Power Plant on a certain island in a certain country suffered a meltdown. After the accident, a power company continued to inject water into the containment of units 1 to 3 to cool the core and recover sewage. As of March 202X, 1.25 Million tons of nuclear sewage had been stored, with 140 tons added every day. On April 9, 202X, a certain government of a certain country decided to discharge the nuclear sewage from a certain island's No. 1 Nuclear power plant into the sea.