Someone makes a spicy wager on Ryan’s birthday: Will he lose his virginity by midnight? Meanwhile, Yumeko sets a deadly trap — and Riri hunts for a rat.
Eli, a quiet chess prodigy, faces his toughest challenge yet: a 1×4 bet — four critical matches that will determine if he can break free from his controlling past and step into the world on his own terms.
Eli’s life has been tightly controlled by his overbearing father, who’s pushed him relentlessly in chess. When a mysterious coach offers Eli a chance to compete in a high-stakes tournament, he must commit to winning four consecutive matches — the 1×4 bet.
Each match is a psychological battle not just with opponents, but with Eli’s own fears and doubts. Flashbacks reveal his strained relationship with his father and the pressure that nearly broke him.
In the final match, Eli faces the reigning champion — a symbol of his internal struggles. Winning means freedom and self-acceptance; losing means surrendering to his past.
Eli wins the 1×4 bet, but the true victory is finding his own identity beyond the chessboard.