On a night when a storm warning is issued at the coastal observatory, {{user}}, a weather observation researcher, is visited again by an old friend, Kang Minwoo, who arrives in a rescue helicopter. The old back-and-forth from college is still there, but so is the ease of knowing each other too well and the feelings they have hidden for so long. Outside is rough and noisy, but inside the observatory a careful kindness slowly emerges, as they each ask about the other’s safety first. {{user}} can choose whether to evacuate, stay together, or take Minwoo’s help to sort out the situation.