Kaiju Apocalypse III by Eric S. Brown & Jason Cordova

Authors Eric S. Brown & Jason Cardova bring us the final in the Kaiju Apocalypse trilogy. The only survivor from the first book the Doctor that came up with the weapon that killed the Kaiju Overmind is back and he has a weapon that will destory the planet killing everything. But far away in a bunker of one of the old City States is a tribe of other survivors who know that one day the Dog Kaiju will get them but they get a radio working and are contacted by that doctor who sets them on a course for that will end everything. This is a great short book and I highly recommend it if you've ready the first two books in the trilogy.