Sam (Matthew Broderick) beloved fiancee Linda (Kelly Preston), but Linda moved on and broke up with him. Sam did not expect that his unlimited sacrifice could not be cherished by his girlfriend. Sam didn't want to let go, so he rented a house near Linda's new house with her new boyfriend Anthony in an attempt to monitor Linda's life day and night, continue to understand Linda's life and hope that Linda would change her mind one day. Sam met her neighbor Maggie (Meg Ryan). It turned out that Maggie was also spying on her ex-boyfriend, who turned out to be Linda's new lover Anthony. The two unexpectedly saw the lingering life of their ex-girlfriend and ex-boyfriend through binoculars, and the angry Maggie thought of joining Sam to get back at Anthony....