They both had history with love and heartbreak. But what happens when they both meet, knowing how long it took them to build their walls higher than ever, and still fall for each other? Kylie Robinson, a 17 year old girl, whose heart shattered by one text, was determined to keep her heart locked away from anyone how would try to take it from her. When she meets Niall Horan, both hearts demand to be unlocked, and freed from their walls guarding it. With all their heartbreak, they've forgotten how to let go and how to love.