Jenny, a single mother raising two daughters after her husband leaves, is aided by her widowed mother, Mary. But Jenny struggles to stay afloat after Mary suffers a devastating stroke and develops dementia.

In 1970s London, a teenage outsider named Enn falls in love with a rebellious alien girl named Zan, who has come to Earth for a party. Together, they navigate the complexities of intergalactic culture and the trials of first love.