Emilia arrives at her Aunt Inés' hostel located on the Argentina-Brazil border, looking for her missing brother. In this lush jungle a dangerous beast which takes the form of different animals seems to be roaming around.
After failing to be admitted into the OSESP Orchestra, a talented violinist is forced to give music classes to teenagers in a public school. He soon finds his world transformed by the power of music and friendships formed with his pupils.