Emily Elizabeth tells about Clifford's first Valentine's Day when he was still a tiny puppy. Clifford goes to the post office with Emily Elizabeth to mail valentines and gets lost in the carts full of letters.

Emily Elizabeth describes the activities she enjoys with her very big, very red dog and how they take care of each other.

Clifford, a very big dog who always overdoes his good deeds, finds something to do that is his size.