After Tiffy breaks up with her boyfriend, she is finding it hard to locate somewhere to live in London on her limited budget. She decides her best option is to share a flat with a man named Leon. Leon, with his job as a palliative care nurse, only needs the apartment from 9am-6pm weekdays, since he spends weekends at his girlfriend's house. This arrangement suits Tiffy perfectly with her job as an assistant book editor at a small publishing house. Even though they are never at the flat at the same time, their lives begin to intermingle as they learn about each other through their possessions and notes to each other, which are at first pithy and humorous, then turn caring as they get involved in their respective lives. Soon, both Tiffy and Leon realize they have feelings for each other. Will they end up as more than just flatmates?