| No.overall | No. inseason | Original release date |
| Season 1 |
| 1 | 1 | December 18, 2021 (2021-12-18) |
| The contestants are introduced to each other and to the island as they are familiarized with the rules of their new home for the next nine days. They then split into teams of three to explore the deserted island. |
| 2 | 2 | December 18, 2021 (2021-12-18) |
| A game for the male contestants commences to win a date with two women. The first voting for matching couples happens to see who gets to escape to Paradise. |
| 3 | 3 | December 25, 2021 (2021-12-25) |
| Once the couples come back from Paradise, it is time to choose a new interest for the next trip. This time, women are challenged to a game to choose two men to go on a lunch date with. Women are then asked to choose who they want to go to Paradise with. |
| 4 | 4 | December 25, 2021 (2021-12-25) |
| Ji-a and Si-hun become closer. Se-hoon is disappointed that he didn't get to go to Paradise. The contestants are given free time to talk to whomever they choose. |
| 5 | 5 | January 1, 2022 (2022-01-01) |
| Newcomers, Kim Su-min, Seong Min-ji, and Cha Hyun-seung, arrives at the Inferno. They are given the chance to choose who they want to take on a yacht date. So-yeon and Se-hoon talk, but it ends in a large disagreement. |
| 6 | 6 | January 1, 2022 (2022-01-01) |
| The newcomers go on a yacht date with their chosen interest. |
| 7 | 7 | January 8, 2022 (2022-01-08) |
| Se-hoon and Ji-yeon have a long talk and become closer during their date in Paradise. When the matched pairs come back to Singles Inferno, a new game for women commences. The top three women can choose their dates to Paradise. |
| 8 | 8 | January 8, 2022 (2022-01-08) |
| Contestants go on a date with a partner of their choice for the last time before the last matching of who leaves the Inferno together. |
| Season 2 |
| 9 | 1 | December 13, 2022 (2022-12-13) |
| The second season begins with brand new contestants. After a day of getting to know one another by cooking together, the contestants are instructed to send a postcard to the person they are the most interested in. |
| 10 | 2 | December 13, 2022 (2022-12-13) |
| The female contestants are instructed to play a game to win the opportunity to go on a lunch date with two men of their choice. Before the vote to go to Paradise, Nadine speaks to Dong-woo to get to know him better. |
| 11 | 3 | December 20, 2022 (2022-12-20) |
| When the couples come back from Paradise, it is time to choose new partners for the next Paradise trip. It is the men's turn to play a game to win a lunch date with two women of their choice. A newcomer, Kim Jin-young, comes in to further complicate the blossoming relationships in the show. |
| 12 | 4 | December 20, 2022 (2022-12-20) |
| Contestants are given free time to talk to a person of their choosing. So-e and Yoong-jae have a long talk about her unrequited feelings for him. |
| 13 | 5 | December 27, 2022 (2022-12-27) |
| Couples that went to Paradise have different outcomes during their dates. During their trip to Paradise, Dong-woo and Nadine discover things about each other that can potentially change their future possibilities of a relationship. Jin-young and Seul-ki become closer. |
| 14 | 6 | December 27, 2022 (2022-12-27) |
| More newcomers, Kim Se-jun and Lee Min-su, arrives to spice up the Inferno island. Yoong-jae and So-e have a private discussion where Yoong-jae was able to properly reject her. |
| 15 | 7 | January 3, 2023 (2023-01-03) |
| Female contestants are challenged to a game to win a date in Paradise. |
| 16 | 8 | January 3, 2023 (2023-01-03) |
| So-e ends up choosing Han-bin to go to Paradise as friends. Jong-woo and Seul-ki have time to become closer. It is the men's turn to play a game to be able to choose who to go to Paradise with. |
| 17 | 9 | January 10, 2023 (2023-01-10) |
| During their time in Paradise, Jong-woo and Seul-ki are able to discuss her conflicting feelings between him and Jin-young. So-e and Se-jun have the chance to become closer on the Inferno island. |
| 18 | 10 | January 10, 2023 (2023-01-10) |
| Contestants go on a date with a partner of their choosing before making the final decision of who they want to leave the Inferno with. The results are unexpected. |
| Season 3 |
| 19 | 1 | December 12, 2023 (2023-12-12) |
| The third season begins with three men and three women yearning for love arriving on the Inferno island, with the opportunity to leave for Paradise right away. The contestants instructed to write down the name of the individual they want on the ticket and give it to them. Two couples are able to go to Paradise. The day after knowing more about each other, a twist shocks the couples. |
| 20 | 2 | December 12, 2023 (2023-12-12) |
| The twist is that there are two Inferno islands. The second Inferno island was shown, and the show goes back to Day 1. Newcomers to the show introduce themselves, and the first couple matching session commences. Only one couple able to go to Paradise. Couples are back to each Inferno island, but with a different pair, and contestants who stay are surprised after knowing that there are two Inferno islands. The second couple matching session with the same instructions commence, but this time they put the ticket in a mailbox. |
| 21 | 3 | December 12, 2023 (2023-12-12) |
| Three couples are match and go to Paradise. Couples ingnites new energy and enjoy their day on Paradise, especially for one couple, who can't get enough of each other. |
| 22 | 4 | December 19, 2023 (2023-12-19) |
| The three couples' conversation in Paradise continues. The two Infernos merge, and all the contestants meet and get to know each other. The first couple game begins with a special meal date as a reward. Couples pair up by choosing the same colored ball from a box. One man cannot participate if he draws the black ball. Won-ik and Ha-jeong wins the game and receive their reward. The other three couples go on a one-on-one lunch date. Singles gather together for a night's drink and have an honest conversation. |
| 23 | 5 | December 19, 2023 (2023-12-19) |
| After a tense campfire discussion, several women are left upset, while Lee Jin-seok and An Min-young have a heartfelt conversation to clarify their connection. The next day, the women discuss their impressions of the men, with one participant receiving the harshest criticism. The arrival of a new female participant shifts the dynamic as she goes on mini-dates with all the men and chooses two to join her in Paradise. While sparks fly there, tensions erupt on Inferno when Yun Ha-jeong confronts Lee Gwan-hee about his behavior in a heated exchange. |
