Fennington Station, a space station near Jupiter (no, not that Jupiter), is home to the It’s a Gas pub, one of the best gastro pubs in the galaxy! It’s adored owners, twins Milly and Tilly, expand into breakfast service so they can fulfill their lifelong dream of going to the Disknee World!

But opening for breakfast has unintended consequences. Mrs. Henderson, owner of the No1. Juice bar, isn’t happy to have fresh competition. As their not-so-friendly rivalry heats up, a dead body is found—and Milly is the immediate suspect.

The twins are on the case to clear Milly’s name and save the It’s a Gas pub’s reputation. With the help of her semi-drunk cat and their eccentric AI, Milly has to discover the truth. It’ll be up to the sisters to clear Milly's name while looking good, shaking a good cocktail, and steaming an impressive head of foam—or die trying.