The Laws of Thermodynamics

Why do people fall for each other when the numbers say they shouldn't? Manel (Vito Sanz), a physicist finishing his PhD thesis, keeps asking, and he answers with the laws of thermodynamics until he falls for Elena (Berta Vázquez), a young model and aspiring actress. Mateo Gil frames the comedy partly as a documentary, with Manel explaining everyone's behavior and feelings by those same laws, and love is treated as one more system to measure.