Mandy goes to the wedding of her sister Lisa, although the family celebration does not seem joyful to her at all. It's simple: she has long been secretly in love with Lisa's fiancé. She can't bear to realize that after the wedding ceremony, her loved one will be lost forever. But she will never allow herself to ruin her sister's happiness. In the midst of the fun, Mandy leaves the party... but not alone. What does a new acquaintance promise her?..