David Raskin is a high-school science nerd who dreams of going to MIT. When he and his friends find his late father's plans for a "temporal displacement device," David can't wait to start tinkering. When they finally get the device to work, the teenagers jump at the opportunity to manipulate time in their favor -- but their joy is short-lived when they begin to discover the consequences of their actions.
Legacy created the time travel machine as well as a backpack for it to be carried in.