The White Octopus Hotel follows Anna, an art valuer, who is asked by an old man to value a strange ornamental white octopus as his dying wish. As she investigates, she follows its trail to the wreck of a glamourous art deco hotel, once known for a collection of magical artefacts. Anna manages to track down a key, but when she uses it, she is transported through time to the White Octopus Hotel as it was during its heyday in the 1930s and is caught up in a scavenger hunt. Here, Anna will find the key to unlocking her family's mysterious past, and a passionate love story with a young artist.