The fault in our stars (the movie)

The movie is about a teenager, Hazel. She has had cancer almost her whole life, now she's 17 and the doctor decided that she's depressed. So she had to go to a support group with others who have cancer, she hates it. But one day she met Agustus there, he is Isac's friend, and he started to like her.
She said that she is a grenade, when she died she's going to explode and if she started to be with more people there are more who will get affected.

But Agustus is special, she likes him, but she doesn't want to have a relationship with him.

She likes to read, and her favorite book whose author is Peter. He lives in Amsterdam. Agustus successfully makes contact with him and if you have cancer you got one "wish", so he and Hazel go to Amsterdam together.
They were on a very romantic dinner and Augustus admitted that he is in love with Hazel. Hazel is still afraid of fall in love, so she don't show him that she loves him. But she does.

Peter proved that he is a very bad person, when they finally met him he was drunk and scolded them so they decided to leave. His assistant follow them out and asked if them if they want to go to Anne Franks house. So they did.

On the top of the house they kissed the first time. They are together and despite that Peter was so unpleasant against them they have a really good trip.
But then Augustus wanted to tell Hazel something.

He got his cancer back. He was fresh in 14 months. But now he has cancer in his whole body. He's going to die. He know it and he only gets more sick for every single day.

One night Hazel's phone rung, it was Agustus, he was on the gas station and something was wrong, Hazel went there and she rung the ambulance although he don't want her to do it. Agustus get's a little bit better and one day he rung to Hazel and asked her to write a farewell speech, she do it and he had a premature burial. Eight days later Agustus died.

Then Hazel met Peter, the man who had written her favorite book who was so malignant when they were in Amsterdam. Agustus has wrote a mail to him, a mail witch properly was to Hazel.