It’s the summer holidays and 13-year-old Marnus feels invisible, sandwiched between a heart-breakingly handsome older brother, and his cute but crafty little brother. Then, one day, a girl called Leila shows up at the house with a petition to save a nearby tree. It is the start of an extraordinary adventure that changes his life: The two become local heroes and bring the community - full of weird and wonderful characters - closer together. For the first time, Marnus feels people are noticing him.