<Tr> <Td_colspan="2"> Theatrical release poster </Td> </Tr> <Tr> <Th> Directed by </Th> <Td> Lee Unkrich </Td> </Tr> <Tr> <Th> Produced by </Th> <Td> Darla K. Anderson </Td> </Tr> <Tr> <Th> Screenplay by </Th> <Td> Michael Arndt </Td> </Tr>

What is the plot of toy story 3