At the urge of his lucky-in-love brother, sixteen year old Tommy has left a red notebook full of challenges on his favourite bookshop shelf, waiting for just a guy or girl to come along and accept its dares. Curious, Ranboo isn't one to back down from a challenge - and the Book of Dares is the perfect distraction he's been looking for. As they send each other on a scavenger hunt across New York, awhirlwind (platonic) romance ensues on paper. But finding out if they share their on - page chemistry in real life could be their biggest dare yet.