天生一對

Nick Parker and Elizabeth James met and married each other during an ocean cruise on the QE2. Elizabeth gave birth to twin daughters Hallie and Annie (both played by Lohan), but the couple divorced and lost contact with each other, each parent raising one of the twins without telling her about her sister. Nick raised Hallie in the Napa Valley and became a wealthy wine grower, while Elizabeth raised Annie in London and became a famous wedding gown designer.

After the ocean cruise and onboard wedding ceremony, the story jumps ahead to a summer in which Nick and Elizabeth coincidentally enroll their daughters in the same summer camp. Annie and Hallie, who are now eleven years old, first meet at the end of a fencing match, when they remove their masks and see that they look alike. A comical hostility between the two girls leads to a prank war that ends when the camp counselors fall into one of Hallie's traps and isolate the twins from the other girls.

安妮和荷莉兩個(gè)小女孩在夏令營中相識。她們相貌驚人的相似，卻非常合不來。十分偶然的，她們知道了對方原來是自己的孿生姐妹。 她們開始互相打聽對方的生活，討論自己的父母：他們在一個(gè)豪華的航海輪船上相遇，在旅途中就結(jié)了婚。然而最后卻以感情破裂收場。因?yàn)檫@場離異，雙胞胎姐妹一個(gè)被爸爸尼克帶到加州，生活在一個(gè)美麗的葡萄園；一個(gè)則被當(dāng)婚紗設(shè)計(jì)師的媽媽麗莎帶到倫敦。兩人因此從未謀面，甚至不知道彼此的存在。 得知了這個(gè)真相，兩個(gè)調(diào)皮的小鬼開始謀劃她們的計(jì)策：她們決定調(diào)換身份，到對方的家庭去生活，一切都進(jìn)展順利。直到父親要再婚，對后母的一場瘋狂狙擊大戰(zhàn)開始了……