Sunny invites her former mentor, Shoo, from the group SES, over for a few days. Shoo arrives with her twin daughters, Im Rayul, Im Rahui, who are crying as they are uncomfortable in the crowded Roommate house. All of the Roommates try to comfort them, unsuccessfully. Later, Gook Joo calms one of the twins down and makes friends with the other one. One of the twins kisses Jackson and they both become comfortable enough for Shoo to leave them home with Gook Joo while she, Jackson, and Nana go shopping. Jackson "bodyguards" Shoo to protect her from shoppers who get too close. He wants to pay the check but his credit card comes up as insufficient funds. He is embarrassed that Shoo had to pay for the groceries and offers to pay her back. Later, there is a knock at the door, it is Shoo's husband. (Source: Wikipedia)