Caleb's world broke the day his brother died of a drug overdose. Now in the throes of grief, Caleb hardly ever sees his friends anymore, and school isn't much better. He's on the verge of failing his songwriting class, never mind that music used to be his greatest passion. Even Tanya, his best friend, is growing tired of trying to push him back into his life. But perhaps most concerning of all: A black cat has been following Caleb around...a cat that only he can see. A cat that may just be a ghost. Then Caleb is assigned a songwriting partner in class: Emmett, the nonbinary lead singer of a local punk band. The cat takes a liking to Emmett--and maybe Caleb does, too. As they write together, Caleb begins opening up about his grief, and the two realize they have more in common than expected. Now Caleb will have to decide if he is ready to heal with Emmett's help--or recede in life and become as invisible as the ghostly cat at his heel.