Elia has just woken up from a coma and is feeling a bit disorientated. The last thing she remembers is a concert and a sentence: "I can't give you the song back, but I can show you how fishes dance". Now that her parents have bought her a smartphone, Elia can finally use Heartbits (an app similar to WhatsApp) and we readers get to witness all her conversations. With the help of her best friend, Sue, Elia will try to remember the three days she has forgotten, whilst also getting to know Tommy, an American boy who has come to Spain on an exchange program, Marion, a girl with burns covering half her face who attends her therapy group, and Phoenix, a stranger who loves aphorisms.