Fifty years have passed since humanity successfully terraformed and migrated to Mars, settling into a hyper-technological era where corporate computer algorithms and synthetic Artificial Intelligence write, compose, and manage nearly all popular culture and entertainment. In this passive, consumer-driven world, two drastically different girls cross paths. Tuesday Simmons is the sheltered, lonely daughter of a prominent right-wing Martian politician who runs away from her provincial home with nothing but a suitcase and a Gibson acoustic guitar. Arriving in the bustling metropolis of Alba City, she runs into Carole Stanley, a fiercely independent Earth-born orphan who balances endless part-time jobs with playing a digital keyboard on street corners. Instantly connecting through their mutual isolation and acoustic musical sensibilities, the two decide to team up as a singer-songwriter duo under the name Carole & Tuesday. Supported by an eccentric, old-school manager named Gus and a tech-savvy fan named Roddy, the girls take a stand against the sterile, machine-driven market. As they build a grassroots following and qualify for the competitive "Mars' Brightest" talent showcase, they find themselves pitted directly against Angela Carpenter—a manufactured pop prodigy engineered by the cold, calculating AI producer Tao. Amid rising political tensions and anti-immigrant unrest on the red planet, Carole and Tuesday's raw, human vocal harmonies spark a slow cultural revolution, building toward a historic, unifying musical moment on Mars.