Seven months after her sister Dandelion's death, Poppy resurrects her phone and finds a message from Jake, a man Dandelion was messaging on a dating app. Driven by Dandelion's legacy of encouraging bravery and embracing bad behavior, Poppy decides to impersonate her sister for one night and go on a date with Jake. This impulsive act leads to an unexpected and intensely passionate connection with Jake, entangling Poppy in a web of deceit as she grapples with the electric, shockingly real chemistry between them. The narrative explores the consequences of this escalating deception as a precarious dare spirals into something far more profound, questioning what happens when one falls in love with a lie.

The premise of a woman impersonating her dead sister to date a man she was messaging is described as breathtakingly original by Clare Leslie Hall. Claire Daverley notes the book is as hilarious as it is heartfelt, while Morgan Dick praises Rosie Storey's writing as tender, wise, and very funny, likening her to a lovechild of Nora Ephron and Emily Dickinson. The book is characterized as a love story, a ballad of sisterhood, and an ode to bad behavior, suggesting a narrative that balances emotional depth with humor and a touch of recklessness.