馬力歐和奧莉維亞一直對愛情持懷疑態度。某夜，在與各自情人分手後，他們相遇且互有好感。有天他們遇見一隻流浪貓，為了給貓咪一個家，他們決定一起住，並為貓咪取名「寶貝」。他們總是在想要是分手後，貓咪該怎麼辦。就當在分手的那晚，貓咪走失。心急如焚的兩人到處貼尋貓啟事，上面寫著「寶貝底叨位」。

Marcelino Sanz de Sautuola y de la Pedrueca, in 1868, accidentally discovered Paleolithic paintings with the help of a hunter named Modesto Cubillas inside Altamira's caves, located in Cantabria, north to Spain. Trying to expose their discovery to the academic world for that they study the paintings, Sautuola crashed against the skepticism and discredit of all experts, who claimed that the caves were false and the paintings made for the own Sautuola, in a effort to get rich. Looking for the truth, Sautuola was the rest of his life fighting to prove that those paintings were real, trying to restore his innocence from the accusations of falsehood launched against him.