Cataclysm (The Alternate Earth Series, Book 1)

Alternate Earth is a world Jess always considered a part of her past, not the way leading to her future. When she began to have a recurring nightmare about it, she knew destiny was urging her to go back there. For five long years, Jess and Mason have struggled to assemble the right combination of travelers fated to journey back to this altered reality with them. Now, they're down to finding the final member for their party, whose presence will allow the vessels to open a dimensional gateway...