Seven Days

Helped by a machine whose technology stems from alien discoveries, Frank Parker has to travel back in time so he can modify events to avoid terrible tragedies. Parker has to reverse all sort of situations that could upset the world balance, namely; to save the human race of the terrible Ebola virus, to prevent the murder of the president of the United States and Russia, to avoid the accident that will kill 11 Northern Korean delegate who come in the United States for the peace talking, etc. The only problem is; do to limitations of the time sphere, he can only go back in time up to seven days...