Barry Egan, a lonely, timid, and emotionally stunted small-business owner, navigates his life dominated by seven overbearing sisters, each keen on meddling in his affairs. He is a collector of random promotions, the latest of which is a scheme to amass a massive number of frequent flyer miles by exploiting a loophole in a pudding promotion. Barry's solitary existence is upturned by a harmonium mysteriously left outside his workplace and a random call from a woman asking about a car service, which leads to a conversation that sparks something within him.

Intrigue and a yearning for connection drive Barry to seek out the woman from the phone call, Lena, who appears equally smitten with the awkward but sincere man. Their budding romance offers Barry a glimpse of what his life could become, away from the cacophony of his sister's clucking and his own internal chaos. However, his attempt to step out of his shell and embrace this chance at happiness is threatened when he becomes entangled with a phone sex line operator that results in a menacing extortion scheme. This quandary puts Barry’s newfound confidence and his prospective future with Lena to the test, while he grapples with the struggles of asserting his identity and pursuing what might be his first genuine opportunity at love.