Typing… (十年後,再一次輸入中⋯⋯)

Did you get a "BFF" during your high school time? Colleen, Jenny and Ivy regarded the relationship between each other as the life-long friendship. However, their friendship was fading out ... due to they needed to step in another stage after the high school time. Years passed, they no-longer to be close like before, the conversation, or you may say the contact, between them was only start with "Happy Birthday" and end with "Thank you". One day, Colleen saw Jenny's WhatsApp message box was showing "typing..." suddenly, she kept waiting but couldn’t get any message from her at last. She would like to find out the reason from her, but she has no idea how to start with. After a few days, Colleen found that there is a "Friendship- Contract" between the three girls in her room. She read and got the idea finally! She is now going to find her BFFs back and archive the forgetting promise...