In 1941, music-loving sisters Thomasina (Emma Appleton) and Martha Hanbury (Stefanie Martini) build a machine called LOLA which can intercept radio and TV broadcasts from the future. While the sisters initially use the machine for small ventures like becoming the first fans of the 1970’s music scene, they soon realize that the machine may hold the key to defeating the Nazis. LOLA proves to be massively effective in shifting the tide of the war, but as Thomasina begins to become carried away with the level of power the machine holds over the future, the sisters soon discover the world-altering consequences of their actions.