Hiding from you

Two world's that can not coexist, Ashley goes through a portal that opens up each year which leads to a world with just boys and leaving the world that only had girls. With the portal closed she is trapped until another year comes. Since girls and boys are not suppose to be in the same world she tries to hide before they find her but with a someone she meets by her side, she thinks she can make it until the year comes...well maybe.