The everyday lives of working-class residents of Albert Square, a traditional Victorian square of terrace houses surrounding a park in the East End of London's Walford borough.

After taking his young son Roddy to a remote Northumberland village, Peter Greenbank meets a violent death, leaving the boy alone with no family to speak of. Roddy is adopted and raised by Kate Makepeace, a good friend of his father’s, and develops a close friendship with Hal and Mary Ellen. But their sibling bond is put to the test as they become adults. The hidden secrets of the past are painfully unearthed as their lives are intertwined by a tragic destiny.