Tomorrow War is a movie about a war in the future that has been lost. It is still being fought, but both the future and the past who are supporting them have long since realized there is no winning it. That continued fighting is just delaying the inevitable. But there is one hope. The future has been working on something that can kill the aliens. A poison. They have plenty of aliens to experiment on up there, and the future has been doing their experiments in what is probably one of the last major surviving cities on the planet. Miami Beach. Which is fallen when the main char arrives. His team is sent to retrieve the scientists and their research, and that data is the last hope the future has. They seek to finalize the research, send the data back to the past with the main char, and have the past mass produce the poison. For a last gasp Hail Mary plan, it’s not a bad one.