Lena Haloway was taught all her life to fear love- it's a disease and you can't be cured until you're 18 years old. For Lena, she should have learned her lesson after her mother died because she was in love. But after she met Alex everything changed, and she found herself doing the exact thing she was taught not to do- fall in love.
One rising action is when Hannah and Lena first meet Alex when he's dressed as a bodyguard. He then brings them to a borderline and whispers to Lena to meet him there the next day, and she does.
When she meets Alex at the beach by the borderline, after a while he reveals he likes her, but Lena knows that should be impossible because he was cured and couldn't like anyone, but then he explains how the scars on his neck were faked and he was not cured, he was an invalid, Lena who is horrified runs away from him.
Lena realizes her feeling for Alex and finds him again, asking to meet. They then find an abandoned house, 37 Brookes, and to continue meeting the and keep their relationship secret and they eventually fall in love.
One day Lena goes to 37 Brookes to meet Alex only to find it locked and Alex hiding nearby where she is then caught by regulators/cops end up taking her home and is scheduled to be cured the next day, though she hopes Alex will come and take her away to the wilds.
Alex comes to save Lena and they try to escape but once they got to the wall Alex got shot and he tells her to run, so she does and escapes into the wilds by herself, and is eventually saved by an invalid named Raven.