Trapped in the past

this is a story i might start makeing if it's good but i wanted to see if the idea's i got a good first

Two kid's for the futur leave there past parent's to get back to the futur.

Along the way one of the kid's get bading hurt on the anckle witch low's them done.(They have a different type of bone structher so they can't go to the doctors). One kid is a boy (Josh) and the other is a girl(?). In the end the boy go's invisble to everyone but one person because his soul is slowly going away from being in the past to long (but not the girl because of her necklace?). Also in the end the girl has a baby with someyone but she won't tell anyone who the father is exept Josh.*wink wink*