When her boyfriend dumps her, Anna, out of uncharacteristic fury, throws his anniversary gift that, by a cruel twist of fate, dents Tom Kaulitz' car. As a poor college student with no money, she is forced to spend 25 days with him as his servant to pay off her debts.

Y/n has just moved to Germany as part of an exchange program. She finds herself living with two twins around her age, Bill and Tom Kaulitz. Unexpectedly, she finds a home in more than just the house she's staying in. When she begins being with Tom, it becomes more and more difficult to hide their relationship from the others. Along with tension between the bandmates growing, everything threatens to fall apart.