72-year-old widower Marcus, cheated by his tenant Brenda, signs a deal with the devil Diablo on his deathbed: every time he shocks a woman, he regains two months of youth. From knocking out a boxer to helping his tenants escape loan sharks, workplace harassment, and an eight-year cold case, Marcus grows younger while mending broken lives. But as he nears his prime, he discovers the contract hides a darker truth — one even Diablo won't reveal.