Snoopy, Come Home

Snoopy, Come Home is a 1972 American animated musical comedydrama film directed by Bill Melendez and written by Charles M. Schulz based on the Peanuts comic strip. The film marks the onscreen debut of Woodstock, who had first appeared in the strip in 1966. Released in May 1972, the film was released by National General Pictures, produced by Lee Mendelson Films and Cinema Center Films in their final production. The film serves as a standalone sequel to 1969s A Boy Named Charlie Brown.

Snoopy and the rest of the Peanuts gang go to the beach for the day. Once there, Snoopy promises to go back to the beach the next day to meet up with Peppermint Patty. After Charlie Brown has gone home to play Monopoly with the others, he notices Snoopy is late and remarks he is tired of Snoopy being late. The next day, Snoopy is thrown off the beach due to a new No Dogs Allowed on this beach rule thus setting a running gag in the film. Then Snoopy gets thrown out of a library due to his disruptive behavior and another No Dogs Allowed in library rule. He then gets into a fight with Linus over his blanket, and later beats Lucy in a boxing match.Later, Snoopy receives a letter from a girl named Lila, who has been in the hospital for three weeks for unspecified reasons and needs Snoopy to keep her company. Upon receiving the letter, Snoopy immediately sets off with Woodstock to go see her, leaving Charlie Brown completely in the dark as to who Lila is. Linus decides to do some investigating, and discovers that Lila is Snoopys original owner Charlie Brown faints upon hearing this. ........

Source: Wikipedia