A disturbed woman helps her dead sister's husband cope with his loss, but becomes dangerously infatuated with him along the way. When he plans to remarry, she goes to terrifying lengths to prevent the wedding going ahead.

While driving in the road, Richard Wynn crashes his car and his beloved wife Carrie Wynn dies. Along two years, his sister-in-law Laci Collins moves to his house and helps Richard to raise his son Danny Wynn and his teenage daughter Molly Wynn. When Richard decides to get married with Nicole Harris, the deranged and psychotic Laci that is in love for Richard, tries to force Richard to call off the wedding with malevolence against Nicole and manipulating Danny.—Claudio Carvalho, Rio de Janeiro, Brazil