Two con artist brothers, Stephen and Bloom, have perfected the art of elaborate schemes since their childhood, amassing wealth through their intricate deceptions. Bloom, weary of the deceptive lifestyle, longs for an "unwritten life," while Stephen remains driven by the thrill of creating the perfect con. To execute one last grand scheme and then retire, Stephen convinces Bloom to join him in targeting an eccentric, wealthy heiress named Penelope. Penelope, socially isolated and engrossed in her myriad of unusual hobbies, becomes an ideal mark, drawing the brothers into a web of manipulated emotions and increasingly complex plans.

As they immerse themselves in the grand con, Bloom starts to develop genuine feelings for Penelope, blurring the lines between the ruse and reality. The plan takes Bloom, Stephen, Penelope, and their silent but resourceful accomplice, Bang Bang, across various international locations, each stage ratcheting up the stakes. Tension arises as Bloom grapples with his affection for Penelope and his desire for a sincere life, while Stephen meticulously orchestrates each detail of the con unbeknownst to all but himself. What starts as a meticulously planned heist evolves into an unpredictable adventure that puts family bonds, loyalty, and trust to the test.