The wall

This is a story about a city's government splitting up the city into farmers on the farm side and government and scientists on the city side. With an electric wall in between no one can get past until a former woman of the government got put on the farm side found out that once a month all of the electricity is pushed to one side making everywhere else have so little electricity to be able to pass through. This woman and her daughter start a revolution to get back onto the city side, but it is not enough when the governor goes to the farm side in a giant metal suit with a giant gun defeats them with one shot. The woman dies and in her last breath tells her daughter to never give up, find a way to the city and kill the governor.