A young teenager named Rusty has invented a Time Machine and brought it to school to show off as a science project. The main protagonist is Gemma, a newly joined classmate. She agrees to volunteer to demonstrate the time machine. Their goal is to go back 500 million years into the past and bring back a live creature now only found in fossils. Needless to say, something goes horribly wrong, and Gemma has to sort the mess out before it’s too late.