Loose Ends Down

When Maria, a young lady with Downs Syndrome, decides to run away from school and go home, she discovers a mysterious hit man named DOA has just taken out her mother. Instead of taking Maria out for witnessing the crime, DOA has a change of heart and decides to train her to become the first ever Downs Syndrome Hit woman. Being a lone wolf with no attachments to anyone, DOA is not capable of handling the emotional needs of Maria without the help of his next mission and neighbor, an activist named Min whose scientist father DOA has just assassinated. Will DOA complete his hit on Min and eliminate Maria after using her or will the tables turn on him once and for all?