In Edwardian Britain, Helen Schlegel becomes engaged to Paul Wilcox during a passionate encounter while at the Wilcox family's country home, Howards End. The Schlegels, an intellectual Anglo-German family, find their values starkly contrasting with the conservative, wealthy Wilcoxes, headed by the resolute businessman Henry Wilcox. Despite their initial excitement, Helen and Paul quickly decide to end their engagement after she sends a telegram to her sister Margaret, prompting a scene when their Aunt Juley arrives.
Months pass, and the Wilcox family moves into a flat across from the Schlegels in London, rekindling Margaret's friendship with Ruth Wilcox, whom she had met briefly prior. Ruth, with her roots in English yeoman stock, deeply cherishes Howards End, the home inherited by her family. As time unfolds, Margaret and Ruth develop a strong bond, even as Ruth's health deteriorates. In her final moments, she bequeaths Howards End to Margaret, a decision that stirs significant upheaval within the Wilcox family, as they contest Ruth's mental state and sincerity with her bequest. In a shocking act of defiance, they choose to burn the paper holding Ruth's wishes.
As events unfold, Henry Wilcox, Ruth's grieving husband, begins to take an interest in Margaret and offers to help her find a new home. This culminates in a proposal of marriage, which Margaret accepts. Prior to this, the Schlegel sisters had connected with a bright but struggling clerk named Leonard Bast, who is romantically involved with Jacky, a woman of questionable background. The sisters admire Leonard's desire for self-improvement and, influenced by Henry's advice, encourage him to leave his job due to rumors of impending bankruptcy. Unfortunately, Leonard takes this to heart and ends up in a much worse financial situation due to the loss of income.
Ultimately, at the wedding of Henry's daughter Evie at his estate, Margaret is shocked to see Helen arriving with the impoverished Basts. Frustrated by Henry's negligence towards the Basts, Helen demands he assist them; however, chaos ensues when Jacky exposes Henry's past infidelity during the celebration, leaving Margaret torn yet forgiving.
Helen, disillusioned with Margaret's choice to marry Henry, plans to flee to Germany but cannot resist her attraction to Leonard, leading to a romantic encounter. Stricken with guilt afterward, she grapples with her feelings and the fate of the Basts, contemplating using her own funds to assist them, but Leonard's pride prevents him from accepting the help.
After Margaret and Henry's marriage, the couple plans to utilize Howards End as storage for the Schlegel siblings' belongings. Margaret becomes increasingly anxious as she receives sporadic updates from Helen, who has been distant. When Aunt Juley falls ill, Helen returns but remains evasive, further igniting Margaret's concern about her sister’s mental state. Upon discovering Helen's pregnancy, Margaret faces a staunch refusal from Henry regarding her plea to allow Helen to stay overnight at Howards End.
The subsequent confrontation at Howards End sees Leonard, enduring poverty with Jacky, facing a tragic encounter with Henry's aggressive son, Charles. The conflict escalates when Leonard is fatally injured during the confrontation, leading to a police inquiry into the incident, devastating Margaret and leaving Henry wracked with guilt.
A year later, the story culminates as Paul, Evie, and Dolly gather at Howards End. Henry and Margaret continue their life together, now cohabitating with Helen and her son, as Henry reveals Margaret's impending inheritance of Howards End. Torn between familial legacies and her own desires, Margaret reflects on the poignant irony of her unexpected inheritance, born from Ruth's dying wishes. As they wave farewell to their guests, the past entwines with the present, capturing the essence of family, loss, and ultimate resolutions.
