Tom, greeting-card writer and hopeless romantic, is caught completely off-guard when his girlfriend, Summer, suddenly dumps him. He reflects on their 500 days together to try to figure out where their love affair went sour, and in doing so, Tom rediscovers his true passions in life.
Wealthy and precocious teenager Juliet transfers from England to New Zealand with her family, and soon befriends the quiet, brooding Pauline through their shared love of fantasy and literature. When their parents begin to suspect that their increasingly intense and obsessive bond is becoming unhealthy, the girls hatch a dark plan for those who threaten to keep them apart.
Dylan and Jamie think it's going to be easy to add the simple act of sex to their friendship, despite what Hollywood romantic comedies would have them believe. They soon discover however that getting physical really does always lead to complications.
A veteran high school teacher befriends a younger art teacher, who is having an affair with one of her 15-year-old students. However, her intentions with this new "friend" also go well beyond platonic friendship.
Longtime friends Ronny and Nick are partners in an auto-design firm. They are hard at work on a presentation for a dream project that would really launch their company. Then Ronny spots Nick's wife out with another man, and in the process of investigating the possible affair, he learns that Nick has a few secrets of his own. As the presentation nears, Ronny agonizes over what might happen if the truth gets out.
Three old high school friends meet in a Michigan motel room to dissect painful memories from their past.
Led by Woody, Andy's toys live happily in his room until Andy's birthday brings Buzz Lightyear onto the scene. Afraid of losing his place in Andy's heart, Woody plots against Buzz. But when circumstances separate Buzz and Woody from their owner, the duo eventually learns to put aside their differences.
Joel Barish, heartbroken that his girlfriend underwent a procedure to erase him from her memory, decides to do the same. However, as he watches his memories of her fade away, he realises that he still loves her, and may be too late to correct his mistake.