Summer's Portal is the first of a five-part time-travel adventure beginning in the Paris of 1920. In our present, Chloe Alexandra Steffington's enviable existence comes to an end with the disappearance of her archeologist parents. Increasingly suspicious that all is not as it seems, she discovers an old document leading her to reluctantly believe her parents are time-travelers. The sudden appearance of Dr. David Stewart leads to a grand adventure in pre World War II France initially preventing the Third Reich from getting wind of this technology. Much more is at stake for humanity than its petty disputes as will be revealed.