The survivors of the 1901 invasion are in the process of recovery when news arrives that the Martians are preparing for another attack. A decision on how best to fight the Martians must be made in the few short years that Earth has left. Through Theodore Roosevelt's leadership, Earth makes unexpected assault on the Martians.
The developing list of characters
Lowell's telegram to President McKinley
The United States isn't the only country planning a respond to the Martian threat, as can be seen in Poincare's Letter