[1] The film, an international co-production shot in French, Hebrew and Arabic, is based on the French young adult novel Une bouteille dans la mer de Gaza by Valérie Zenatti, originally published in 2005 and adapted for the screen by Zenatti and Binisti.

Naïm (Mahmoud Shalaby), a sensitive but aimless 20-year-old Palestinian living in Gaza, discovers the bottle and tries to answer Tal's question by initiating an email correspondence.

Similarly to the film, the book explores the bond between Tal, a sixteen-year-old Israeli, and Naim, a twenty-year-old Palestinian.

Deeply affected, Tal writes down her feelings and urges her brother, Eyton, to toss the letter, enclosed in a bottle, into the Gaza Sea.

Naim, who calls himself "Gazaman," discovers the letter and replies via email, sparking a cross-boundary exchange of thoughts and emotions.